121297956 has 24 divisors (see below), whose sum is σ = 304800384. Its totient is φ = 37322400.

The previous prime is 121297937. The next prime is 121297987. The reversal of 121297956 is 659792121.

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, 388620 + ... + 388931.

It is an arithmetic number, because the mean of its divisors is an integer number (12700016).

Almost surely, 2^121297956 is an apocalyptic number.

It is an amenable number.

121297956 is an abundant number, since it is smaller than the sum of its proper divisors (183502428).

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

121297956 is a wasteful number, since it uses less digits than its factorization.

121297956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777571 (or 777569 counting only the distinct ones).

The product of its digits is 68040, while the sum is 42.

The square root of 121297956 is about 11013.5351272877. The cubic root of 121297956 is about 495.0143940310.

The spelling of 121297956 in words is "one hundred twenty-one million, two hundred ninety-seven thousand, nine hundred fifty-six".