121560406 has 8 divisors (see below), whose sum is σ = 198917064. Its totient is φ = 55254720.

The previous prime is 121560391. The next prime is 121560433. The reversal of 121560406 is 604065121.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 2762715 + ... + 2762758.

It is an arithmetic number, because the mean of its divisors is an integer number (24864633).

Almost surely, 2^121560406 is an apocalyptic number.

121560406 is a deficient number, since it is larger than the sum of its proper divisors (77356658).

121560406 is a wasteful number, since it uses less digits than its factorization.

121560406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5525486.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 121560406 is about 11025.4435738432. The cubic root of 121560406 is about 495.3711544832.

The spelling of 121560406 in words is "one hundred twenty-one million, five hundred sixty thousand, four hundred six".