121154442 has 16 divisors (see below), whose sum is σ = 242416800. Its totient is φ = 40366832.

The previous prime is 121154413. The next prime is 121154447. The reversal of 121154442 is 244451121.

It is not an unprimeable number, because it can be changed into a prime (121154447) 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, 23773 + ... + 28415.

It is an arithmetic number, because the mean of its divisors is an integer number (15151050).

Almost surely, 2^121154442 is an apocalyptic number.

121154442 is an abundant number, since it is smaller than the sum of its proper divisors (121262358).

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

121154442 is a wasteful number, since it uses less digits than its factorization.

121154442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8997.

The product of its digits is 1280, while the sum is 24.

The square root of 121154442 is about 11007.0178522613. The cubic root of 121154442 is about 494.8190911197.

The spelling of 121154442 in words is "one hundred twenty-one million, one hundred fifty-four thousand, four hundred forty-two".