| Base | Representation |
|---|---|
| bin | 111111001110010… |
| … | …0101000111110110 |
| 3 | 12110211211100221100 |
| 4 | 1332130211013312 |
| 5 | 13321040440202 |
| 6 | 550301230530 |
| 7 | 103366532520 |
| oct | 17634450766 |
| 9 | 5424740840 |
| 10 | 2121421302 |
| 11 | 99953a250 |
| 12 | 4b2562446 |
| 13 | 27a67b1a0 |
| 14 | 161a64a10 |
| 15 | c639941c |
| hex | 7e7251f6 |
2121421302 has 192 divisors, whose sum is σ = 6208151040. Its totient is φ = 505612800.
The previous prime is 2121421277. The next prime is 2121421321. The reversal of 2121421302 is 2031241212.
It is a happy number.
2121421302 is a `hidden beast` number, since 212 + 1 + 421 + 30 + 2 = 666.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5062849 + ... + 5063267.
It is an arithmetic number, because the mean of its divisors is an integer number (32334120).
Almost surely, 22121421302 is an apocalyptic number.
2121421302 is a gapful number since it is divisible by the number (22) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 2121421302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3104075520).
2121421302 is an abundant number, since it is smaller than the sum of its proper divisors (4086729738).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2121421302 is a wasteful number, since it uses less digits than its factorization.
2121421302 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 739 (or 736 counting only the distinct ones).
The product of its (nonzero) digits is 192, while the sum is 18.
The square root of 2121421302 is about 46058.8895002908. The cubic root of 2121421302 is about 1284.9186768421.
Adding to 2121421302 its reverse (2031241212), we get a palindrome (4152662514).
It can be divided in two parts, 212142 and 1302, that added together give a square (213444 = 4622).
The spelling of 2121421302 in words is "two billion, one hundred twenty-one million, four hundred twenty-one thousand, three hundred two".
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