121432120 has 16 divisors (see below), whose sum is σ = 273222360. Its totient is φ = 48572832.

The previous prime is 121432117. The next prime is 121432123. The reversal of 121432120 is 21234121.

It is an interprime number because it is at equal distance from previous prime (121432117) and next prime (121432123).

It is a junction number, because it is equal to n+sod(n) for n = 121432094 and 121432103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121432123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1517862 + ... + 1517941.

Almost surely, 2^121432120 is an apocalyptic number.

121432120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121432120 is an abundant number, since it is smaller than the sum of its proper divisors (151790240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121432120 is a wasteful number, since it uses less digits than its factorization.

121432120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3035814 (or 3035810 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 121432120 is about 11019.6243130154. The cubic root of 121432120 is about 495.1968335997.

Adding to 121432120 its reverse (21234121), we get a palindrome (142666241).

The spelling of 121432120 in words is "one hundred twenty-one million, four hundred thirty-two thousand, one hundred twenty".