747872442 has 12 divisors (see below), whose sum is σ = 1620390330. Its totient is φ = 249290808.

The previous prime is 747872417. The next prime is 747872443. The reversal of 747872442 is 244278747.

747872442 is a `hidden beast` number, since 74 + 78 + 72 + 442 = 666.

It can be written as a sum of positive squares in only one way, i.e., 655308801 + 92563641 = 25599^2 + 9621^2 .

It is not an unprimeable number, because it can be changed into a prime (747872443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20774217 + ... + 20774252.

Almost surely, 2^747872442 is an apocalyptic number.

747872442 is an abundant number, since it is smaller than the sum of its proper divisors (872517888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

747872442 is a wasteful number, since it uses less digits than its factorization.

747872442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41548477 (or 41548474 counting only the distinct ones).

The product of its digits is 702464, while the sum is 45.

The square root of 747872442 is about 27347.2565717295. The cubic root of 747872442 is about 907.7003651113.

The spelling of 747872442 in words is "seven hundred forty-seven million, eight hundred seventy-two thousand, four hundred forty-two".