122861906 has 16 divisors (see below), whose sum is σ = 194745600. Its totient is φ = 58014528.

The previous prime is 122861899. The next prime is 122861939. The reversal of 122861906 is 609168221.

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, 13271 + ... + 20538.

It is an arithmetic number, because the mean of its divisors is an integer number (12171600).

Almost surely, 2^122861906 is an apocalyptic number.

122861906 is a deficient number, since it is larger than the sum of its proper divisors (71883694).

122861906 is a wasteful number, since it uses less digits than its factorization.

122861906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33913.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 122861906 is about 11084.3089996625. The cubic root of 122861906 is about 497.1327977301.

The spelling of 122861906 in words is "one hundred twenty-two million, eight hundred sixty-one thousand, nine hundred six".