121272658 has 16 divisors (see below), whose sum is σ = 196693056. Its totient is φ = 55746000.

The previous prime is 121272653. The next prime is 121272659. The reversal of 121272658 is 856272121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121272653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2766 + ... + 15817.

It is an arithmetic number, because the mean of its divisors is an integer number (12293316).

Almost surely, 2^121272658 is an apocalyptic number.

121272658 is a deficient number, since it is larger than the sum of its proper divisors (75420398).

121272658 is a wasteful number, since it uses less digits than its factorization.

121272658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18849.

The product of its digits is 13440, while the sum is 34.

The square root of 121272658 is about 11012.3865714930. The cubic root of 121272658 is about 494.9799781039.

The spelling of 121272658 in words is "one hundred twenty-one million, two hundred seventy-two thousand, six hundred fifty-eight".