202974642 has 24 divisors (see below), whose sum is σ = 473608044. Its totient is φ = 62453664.

The previous prime is 202974617. The next prime is 202974649. The reversal of 202974642 is 246479202.

202974642 is a `hidden beast` number, since 2 + 0 + 2 + 9 + 7 + 4 + 642 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 201952521 + 1022121 = 14211^2 + 1011^2 .

It is a junction number, because it is equal to n+sod(n) for n = 202974597 and 202974606.

It is not an unprimeable number, because it can be changed into a prime (202974649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 433473 + ... + 433940.

Almost surely, 2^202974642 is an apocalyptic number.

202974642 is an abundant number, since it is smaller than the sum of its proper divisors (270633402).

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

202974642 is a wasteful number, since it uses less digits than its factorization.

202974642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867434 (or 867431 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 202974642 is about 14246.9169296378. The cubic root of 202974642 is about 587.6885932634.

The spelling of 202974642 in words is "two hundred two million, nine hundred seventy-four thousand, six hundred forty-two".