121432432 has 20 divisors (see below), whose sum is σ = 256664376. Its totient is φ = 55196480.

The previous prime is 121432393. The next prime is 121432453. The reversal of 121432432 is 234234121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344803 + ... + 345154.

Almost surely, 2^121432432 is an apocalyptic number.

It is an amenable number.

121432432 is an abundant number, since it is smaller than the sum of its proper divisors (135231944).

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

121432432 is a wasteful number, since it uses less digits than its factorization.

121432432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689976 (or 689970 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 121432432 is about 11019.6384695688. The cubic root of 121432432 is about 495.1972577085.

Adding to 121432432 its reverse (234234121), we get a palindrome (355666553).

The spelling of 121432432 in words is "one hundred twenty-one million, four hundred thirty-two thousand, four hundred thirty-two".