402012130 has 24 divisors (see below), whose sum is σ = 783570132. Its totient is φ = 148434624.

The previous prime is 402012059. The next prime is 402012133. The reversal of 402012130 is 31210204.

It can be written as a sum of positive squares in 6 ways, for example, as 140446201 + 261565929 = 11851^2 + 16173^2 .

It is a super-2 number, since 2×402012130² = 323227505334273800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 402012130.

It is not an unprimeable number, because it can be changed into a prime (402012133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117249 + ... + 120628.

Almost surely, 2^402012130 is an apocalyptic number.

402012130 is a deficient number, since it is larger than the sum of its proper divisors (381558002).

402012130 is a wasteful number, since it uses less digits than its factorization.

402012130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237910 (or 237897 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 402012130 is about 20050.2401481878. The cubic root of 402012130 is about 738.0396922955.

Adding to 402012130 its reverse (31210204), we get a palindrome (433222334).

The spelling of 402012130 in words is "four hundred two million, twelve thousand, one hundred thirty".