| Base | Representation |
|---|---|
| bin | 1110011101101… |
| … | …10001011000100 |
| 3 | 22110022022210100 |
| 4 | 13032312023010 |
| 5 | 222030114140 |
| 6 | 20012324100 |
| 7 | 3002210556 |
| oct | 716661304 |
| 9 | 273268710 |
| 10 | 121332420 |
| 11 | 62541930 |
| 12 | 34773630 |
| 13 | 1c1a2541 |
| 14 | 121854d6 |
| 15 | a9ba530 |
| hex | 73b62c4 |
121332420 has 144 divisors (see below), whose sum is σ = 404756352. Its totient is φ = 29176320.
The previous prime is 121332401. The next prime is 121332437. The reversal of 121332420 is 24233121.
121332420 is a `hidden beast` number, since 1 + 213 + 32 + 420 = 666.
It is a super-2 number, since 2×1213324202 = 29443112286112800, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 121332393 and 121332402.
It is an unprimeable number.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 461209 + ... + 461471.
It is an arithmetic number, because the mean of its divisors is an integer number (2810808).
Almost surely, 2121332420 is an apocalyptic number.
121332420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 121332420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202378176).
121332420 is an abundant number, since it is smaller than the sum of its proper divisors (283423932).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
121332420 is a wasteful number, since it uses less digits than its factorization.
121332420 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 522 (or 517 counting only the distinct ones).
The product of its (nonzero) digits is 288, while the sum is 18.
The square root of 121332420 is about 11015.0996364082. The cubic root of 121332420 is about 495.0612718766.
Adding to 121332420 its reverse (24233121), we get a palindrome (145565541).
It can be divided in two parts, 1213 and 32420, that added together give a palindrome (33633).
The spelling of 121332420 in words is "one hundred twenty-one million, three hundred thirty-two thousand, four hundred twenty".
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