921142948 has 24 divisors (see below), whose sum is σ = 1762758144. Its totient is φ = 417698400.

The previous prime is 921142931. The next prime is 921142961. The reversal of 921142948 is 849241129.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 921142948.

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, 6340 + ... + 43387.

It is an arithmetic number, because the mean of its divisors is an integer number (73448256).

Almost surely, 2^921142948 is an apocalyptic number.

It is an amenable number.

921142948 is a deficient number, since it is larger than the sum of its proper divisors (841615196).

921142948 is a wasteful number, since it uses less digits than its factorization.

921142948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50163 (or 50161 counting only the distinct ones).

The product of its digits is 41472, while the sum is 40.

The square root of 921142948 is about 30350.3368679822. The cubic root of 921142948 is about 972.9914198555.

The spelling of 921142948 in words is "nine hundred twenty-one million, one hundred forty-two thousand, nine hundred forty-eight".