121089402 has 48 divisors (see below), whose sum is σ = 317483712. Its totient is φ = 32561280.

The previous prime is 121089377. The next prime is 121089403. The reversal of 121089402 is 204980121.

It is not an unprimeable number, because it can be changed into a prime (121089403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26124 + ... + 30407.

It is an arithmetic number, because the mean of its divisors is an integer number (6614244).

Almost surely, 2^121089402 is an apocalyptic number.

121089402 is an abundant number, since it is smaller than the sum of its proper divisors (196394310).

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

121089402 is a wasteful number, since it uses less digits than its factorization.

121089402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56563 (or 56560 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 121089402 is about 11004.0629769190. The cubic root of 121089402 is about 494.7305297929.

The spelling of 121089402 in words is "one hundred twenty-one million, eighty-nine thousand, four hundred two".