402015213 has 24 divisors (see below), whose sum is σ = 597932192. Its totient is φ = 260130528.

The previous prime is 402015199. The next prime is 402015227. The reversal of 402015213 is 312510204.

It is an interprime number because it is at equal distance from previous prime (402015199) and next prime (402015227).

It is not a de Polignac number, because 402015213 - 2⁵ = 402015181 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402015013) 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 23 ways as a sum of consecutive naturals, for example, 59895 + ... + 66267.

Almost surely, 2^402015213 is an apocalyptic number.

402015213 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

402015213 is a deficient number, since it is larger than the sum of its proper divisors (195916979).

402015213 is a wasteful number, since it uses less digits than its factorization.

402015213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6585 (or 6582 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 402015213 is about 20050.3170299125. The cubic root of 402015213 is about 738.0415789472.

Adding to 402015213 its reverse (312510204), we get a palindrome (714525417).

The spelling of 402015213 in words is "four hundred two million, fifteen thousand, two hundred thirteen".