402142020131 has 4 divisors (see below), whose sum is σ = 403335320232. Its totient is φ = 400948720032.

The previous prime is 402142020053. The next prime is 402142020169. The reversal of 402142020131 is 131020241204.

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

It is a cyclic number.

It is not a de Polignac number, because 402142020131 - 2²⁶ = 402074911267 is a prime.

It is a super-2 number, since 2×402142020131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402142029131) 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, 596649545 + ... + 596650218.

It is an arithmetic number, because the mean of its divisors is an integer number (100833830058).

Almost surely, 2^402142020131 is an apocalyptic number.

402142020131 is a deficient number, since it is larger than the sum of its proper divisors (1193300101).

402142020131 is a wasteful number, since it uses less digits than its factorization.

402142020131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1193300100.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 402142020131 its reverse (131020241204), we get a palindrome (533162261335).

The spelling of 402142020131 in words is "four hundred two billion, one hundred forty-two million, twenty thousand, one hundred thirty-one".