121172408 has 32 divisors (see below), whose sum is σ = 263220960. Its totient is φ = 51217920.

The previous prime is 121172383. The next prime is 121172419. The reversal of 121172408 is 804271121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10733 + ... + 18908.

It is an arithmetic number, because the mean of its divisors is an integer number (8225655).

Almost surely, 2^121172408 is an apocalyptic number.

It is an amenable number.

121172408 is an abundant number, since it is smaller than the sum of its proper divisors (142048552).

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

121172408 is a wasteful number, since it uses less digits than its factorization.

121172408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29727 (or 29723 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 121172408 is about 11007.8339377009. The cubic root of 121172408 is about 494.8435488291.

The spelling of 121172408 in words is "one hundred twenty-one million, one hundred seventy-two thousand, four hundred eight".