121556974 has 16 divisors (see below), whose sum is σ = 227327616. Its totient is φ = 47359800.

The previous prime is 121556971. The next prime is 121556977. The reversal of 121556974 is 479655121.

It is an interprime number because it is at equal distance from previous prime (121556971) and next prime (121556977).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121556971) 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, 394512 + ... + 394819.

It is an arithmetic number, because the mean of its divisors is an integer number (14207976).

Almost surely, 2^121556974 is an apocalyptic number.

121556974 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

121556974 is a deficient number, since it is larger than the sum of its proper divisors (105770642).

121556974 is a wasteful number, since it uses less digits than its factorization.

121556974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789351.

The product of its digits is 75600, while the sum is 40.

The square root of 121556974 is about 11025.2879327481. The cubic root of 121556974 is about 495.3664925217.

The spelling of 121556974 in words is "one hundred twenty-one million, five hundred fifty-six thousand, nine hundred seventy-four".