121409232 has 40 divisors (see below), whose sum is σ = 358447296. Its totient is φ = 34688256.

The previous prime is 121409231. The next prime is 121409251. The reversal of 121409232 is 232904121.

It is a super-2 number, since 2×121409232² = 29480403229659648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121409231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180333 + ... + 181004.

Almost surely, 2^121409232 is an apocalyptic number.

121409232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121409232 is an abundant number, since it is smaller than the sum of its proper divisors (237038064).

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

121409232 is a wasteful number, since it uses less digits than its factorization.

121409232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361355 (or 361349 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 121409232 is about 11018.5857531718. The cubic root of 121409232 is about 495.1657194341.

The spelling of 121409232 in words is "one hundred twenty-one million, four hundred nine thousand, two hundred thirty-two".