121255404 has 12 divisors (see below), whose sum is σ = 282929304. Its totient is φ = 40418464.

The previous prime is 121255391. The next prime is 121255487. The reversal of 121255404 is 404552121.

It is a tau number, because it is divible by the number of its divisors (12).

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, 5052297 + ... + 5052320.

It is an arithmetic number, because the mean of its divisors is an integer number (23577442).

Almost surely, 2^121255404 is an apocalyptic number.

It is an amenable number.

121255404 is an abundant number, since it is smaller than the sum of its proper divisors (161673900).

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

121255404 is a wasteful number, since it uses less digits than its factorization.

121255404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10104624 (or 10104622 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 121255404 is about 11011.6031530382. The cubic root of 121255404 is about 494.9565026568.

It can be divided in two parts, 1212 and 55404, that added together give a triangular number (56616 = T₃₃₆).

The spelling of 121255404 in words is "one hundred twenty-one million, two hundred fifty-five thousand, four hundred four".