121077428 has 24 divisors (see below), whose sum is σ = 226497600. Its totient is φ = 56492480.

The previous prime is 121077419. The next prime is 121077433. The reversal of 121077428 is 824770121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121077394 and 121077403.

It is a congruent number.

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, 12278 + ... + 19821.

It is an arithmetic number, because the mean of its divisors is an integer number (9437400).

Almost surely, 2^121077428 is an apocalyptic number.

It is an amenable number.

121077428 is a deficient number, since it is larger than the sum of its proper divisors (105420172).

121077428 is a wasteful number, since it uses less digits than its factorization.

121077428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32167 (or 32165 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 121077428 is about 11003.5188917001. The cubic root of 121077428 is about 494.7142220111.

The spelling of 121077428 in words is "one hundred twenty-one million, seventy-seven thousand, four hundred twenty-eight".