121279256 has 16 divisors (see below), whose sum is σ = 259884240. Its totient is φ = 51976800.

The previous prime is 121279243. The next prime is 121279273. The reversal of 121279256 is 652972121.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1082795 + ... + 1082906.

It is an arithmetic number, because the mean of its divisors is an integer number (16242765).

Almost surely, 2^121279256 is an apocalyptic number.

It is an amenable number.

121279256 is an abundant number, since it is smaller than the sum of its proper divisors (138604984).

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

121279256 is a wasteful number, since it uses less digits than its factorization.

121279256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2165714 (or 2165710 counting only the distinct ones).

The product of its digits is 15120, while the sum is 35.

The square root of 121279256 is about 11012.6861391760. The cubic root of 121279256 is about 494.9889546221.

The spelling of 121279256 in words is "one hundred twenty-one million, two hundred seventy-nine thousand, two hundred fifty-six".