402254530 has 32 divisors (see below), whose sum is σ = 731041200. Its totient is φ = 159359232.

The previous prime is 402254509. The next prime is 402254537. The reversal of 402254530 is 35452204.

It can be written as a sum of positive squares in 8 ways, for example, as 117353889 + 284900641 = 10833^2 + 16879^2 .

It is a junction number, because it is equal to n+sod(n) for n = 402254495 and 402254504.

It is not an unprimeable number, because it can be changed into a prime (402254537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 615684 + ... + 616336.

Almost surely, 2^402254530 is an apocalyptic number.

402254530 is a deficient number, since it is larger than the sum of its proper divisors (328786670).

402254530 is a wasteful number, since it uses less digits than its factorization.

402254530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 402254530 is about 20056.2840526355. The cubic root of 402254530 is about 738.1880003216.

The spelling of 402254530 in words is "four hundred two million, two hundred fifty-four thousand, five hundred thirty".