402424131 has 8 divisors (see below), whose sum is σ = 536693584. Its totient is φ = 268218720.

The previous prime is 402424129. The next prime is 402424133. The reversal of 402424131 is 131424204.

It is an interprime number because it is at equal distance from previous prime (402424129) and next prime (402424133).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 402424131 - 2¹ = 402424129 is a prime.

It is a super-2 number, since 2×402424131² = 323890362422210322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402424098 and 402424107.

It is not an unprimeable number, because it can be changed into a prime (402424133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1341 + ... + 28401.

It is an arithmetic number, because the mean of its divisors is an integer number (67086698).

Almost surely, 2^402424131 is an apocalyptic number.

402424131 is a deficient number, since it is larger than the sum of its proper divisors (134269453).

402424131 is a wasteful number, since it uses less digits than its factorization.

402424131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32021.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 402424131 is about 20060.5117332535. The cubic root of 402424131 is about 738.2917321815.

Adding to 402424131 its reverse (131424204), we get a palindrome (533848335).

The spelling of 402424131 in words is "four hundred two million, four hundred twenty-four thousand, one hundred thirty-one".