121234432 has 88 divisors (see below), whose sum is σ = 271186560. Its totient is φ = 53698560.

The previous prime is 121234411. The next prime is 121234433. The reversal of 121234432 is 234432121.

It is a tau number, because it is divible by the number of its divisors (88).

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

It is not an unprimeable number, because it can be changed into a prime (121234433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529294 + ... + 529522.

Almost surely, 2^121234432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121234432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135593280).

121234432 is an abundant number, since it is smaller than the sum of its proper divisors (149952128).

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

121234432 is a wasteful number, since it uses less digits than its factorization.

121234432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 289 counting only the distinct ones).

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

The square root of 121234432 is about 11010.6508436150. The cubic root of 121234432 is about 494.9279655746.

Adding to 121234432 its reverse (234432121), we get a palindrome (355666553).

The spelling of 121234432 in words is "one hundred twenty-one million, two hundred thirty-four thousand, four hundred thirty-two".