121620788 has 24 divisors (see below), whose sum is σ = 227146752. Its totient is φ = 56778624.

The previous prime is 121620787. The next prime is 121620797. The reversal of 121620788 is 887026121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121620787) 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, 1595 + ... + 15677.

It is an arithmetic number, because the mean of its divisors is an integer number (9464448).

Almost surely, 2^121620788 is an apocalyptic number.

It is an amenable number.

121620788 is a deficient number, since it is larger than the sum of its proper divisors (105525964).

121620788 is a wasteful number, since it uses less digits than its factorization.

121620788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14231 (or 14229 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 121620788 is about 11028.1815364093. The cubic root of 121620788 is about 495.4531618594.

The spelling of 121620788 in words is "one hundred twenty-one million, six hundred twenty thousand, seven hundred eighty-eight".