121690932 has 24 divisors (see below), whose sum is σ = 309759072. Its totient is φ = 36876000.

The previous prime is 121690909. The next prime is 121690937. The reversal of 121690932 is 239096121.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 121690893 and 121690902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121690937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460819 + ... + 461082.

It is an arithmetic number, because the mean of its divisors is an integer number (12906628).

Almost surely, 2^121690932 is an apocalyptic number.

121690932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121690932 is an abundant number, since it is smaller than the sum of its proper divisors (188068140).

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

121690932 is a wasteful number, since it uses less digits than its factorization.

121690932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921919 (or 921917 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 121690932 is about 11031.3612940561. The cubic root of 121690932 is about 495.5483933520.

The spelling of 121690932 in words is "one hundred twenty-one million, six hundred ninety thousand, nine hundred thirty-two".