121456977 has 32 divisors (see below), whose sum is σ = 175570944. Its totient is φ = 74520000.

The previous prime is 121456969. The next prime is 121456981. The reversal of 121456977 is 779654121.

It is a happy number.

It is not a de Polignac number, because 121456977 - 2³ = 121456969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121456957) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161352 + ... + 162102.

It is an arithmetic number, because the mean of its divisors is an integer number (5486592).

Almost surely, 2^121456977 is an apocalyptic number.

It is an amenable number.

121456977 is a deficient number, since it is larger than the sum of its proper divisors (54113967).

121456977 is a wasteful number, since it uses less digits than its factorization.

121456977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869.

The product of its digits is 105840, while the sum is 42.

The square root of 121456977 is about 11020.7521068210. The cubic root of 121456977 is about 495.2306200145.

The spelling of 121456977 in words is "one hundred twenty-one million, four hundred fifty-six thousand, nine hundred seventy-seven".