402212413 has 4 divisors (see below), whose sum is σ = 402322140. Its totient is φ = 402102688.

The previous prime is 402212359. The next prime is 402212483. The reversal of 402212413 is 314212204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 174715524 + 227496889 = 13218^2 + 15083^2 .

It is a cyclic number.

It is not a de Polignac number, because 402212413 - 2¹³ = 402204221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402212483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49168 + ... + 56761.

It is an arithmetic number, because the mean of its divisors is an integer number (100580535).

Almost surely, 2^402212413 is an apocalyptic number.

It is an amenable number.

402212413 is a deficient number, since it is larger than the sum of its proper divisors (109727).

402212413 is a wasteful number, since it uses less digits than its factorization.

402212413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109726.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 402212413 is about 20055.2340549793. The cubic root of 402212413 is about 738.1622360796.

Adding to 402212413 its reverse (314212204), we get a palindrome (716424617).

The spelling of 402212413 in words is "four hundred two million, two hundred twelve thousand, four hundred thirteen".