121892864 has 26 divisors (see below), whose sum is σ = 243764160. Its totient is φ = 60944384.

The previous prime is 121892863. The next prime is 121892909. The reversal of 121892864 is 468298121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121892863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10784 + ... + 18975.

Almost surely, 2^121892864 is an apocalyptic number.

It is an amenable number.

121892864 is a deficient number, since it is larger than the sum of its proper divisors (121871296).

121892864 is an frugal number, since it uses more digits than its factorization.

121892864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29783 (or 29761 counting only the distinct ones).

The product of its digits is 55296, while the sum is 41.

The square root of 121892864 is about 11040.5101331415. The cubic root of 121892864 is about 495.8223435896.

The spelling of 121892864 in words is "one hundred twenty-one million, eight hundred ninety-two thousand, eight hundred sixty-four".