921242574682 has 4 divisors (see below), whose sum is σ = 1381863862026. Its totient is φ = 460621287340.

The previous prime is 921242574641. The next prime is 921242574737. The reversal of 921242574682 is 286475242129.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 494871447841 + 426371126841 = 703471^2 + 652971^2 .

It is a super-2 number, since 2×921242574682² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230310643669 + ... + 230310643672.

Almost surely, 2^921242574682 is an apocalyptic number.

921242574682 is a deficient number, since it is larger than the sum of its proper divisors (460621287344).

921242574682 is a wasteful number, since it uses less digits than its factorization.

921242574682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460621287343.

The product of its digits is 3870720, while the sum is 52.

The spelling of 921242574682 in words is "nine hundred twenty-one billion, two hundred forty-two million, five hundred seventy-four thousand, six hundred eighty-two".