121853904 has 20 divisors (see below), whose sum is σ = 314789376. Its totient is φ = 40617952.

The previous prime is 121853899. The next prime is 121853917. The reversal of 121853904 is 409358121.

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, 1269264 + ... + 1269359.

Almost surely, 2^121853904 is an apocalyptic number.

It is an amenable number.

121853904 is an abundant number, since it is smaller than the sum of its proper divisors (192935472).

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

121853904 is a wasteful number, since it uses less digits than its factorization.

121853904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2538634 (or 2538628 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 121853904 is about 11038.7455809073. The cubic root of 121853904 is about 495.7695122307.

The spelling of 121853904 in words is "one hundred twenty-one million, eight hundred fifty-three thousand, nine hundred four".