121242204 has 48 divisors (see below), whose sum is σ = 314929440. Its totient is φ = 40337280.

The previous prime is 121242193. The next prime is 121242221. The reversal of 121242204 is 402242121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101032 + ... + 102224.

It is an arithmetic number, because the mean of its divisors is an integer number (6561030).

Almost surely, 2^121242204 is an apocalyptic number.

It is an amenable number.

121242204 is an abundant number, since it is smaller than the sum of its proper divisors (193687236).

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

121242204 is a wasteful number, since it uses less digits than its factorization.

121242204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2147 (or 2139 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 121242204 is about 11011.0037689577. The cubic root of 121242204 is about 494.9385414974.

Adding to 121242204 its reverse (402242121), we get a palindrome (523484325).

The spelling of 121242204 in words is "one hundred twenty-one million, two hundred forty-two thousand, two hundred four".