121928164 has 12 divisors (see below), whose sum is σ = 213455088. Its totient is φ = 60941000.

The previous prime is 121928123. The next prime is 121928171. The reversal of 121928164 is 461829121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12639 + ... + 20089.

It is an arithmetic number, because the mean of its divisors is an integer number (17787924).

Almost surely, 2^121928164 is an apocalyptic number.

It is an amenable number.

121928164 is a deficient number, since it is larger than the sum of its proper divisors (91526924).

121928164 is a wasteful number, since it uses less digits than its factorization.

121928164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11546 (or 11544 counting only the distinct ones).

The product of its digits is 6912, while the sum is 34.

The square root of 121928164 is about 11042.1086754297. The cubic root of 121928164 is about 495.8702021185.

The spelling of 121928164 in words is "one hundred twenty-one million, nine hundred twenty-eight thousand, one hundred sixty-four".