402122144131 has 4 divisors (see below), whose sum is σ = 402504754264. Its totient is φ = 401739534000.

The previous prime is 402122144129. The next prime is 402122144143. The reversal of 402122144131 is 131441221204.

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 402122144131 - 2¹ = 402122144129 is a prime.

It is a super-2 number, since 2×402122144131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402122144096 and 402122144105.

It is not an unprimeable number, because it can be changed into a prime (402122144111) 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 3 ways as a sum of consecutive naturals, for example, 191303490 + ... + 191305591.

It is an arithmetic number, because the mean of its divisors is an integer number (100626188566).

Almost surely, 2^402122144131 is an apocalyptic number.

402122144131 is a deficient number, since it is larger than the sum of its proper divisors (382610133).

402122144131 is a wasteful number, since it uses less digits than its factorization.

402122144131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382610132.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 402122144131 its reverse (131441221204), we get a palindrome (533563365335).

The spelling of 402122144131 in words is "four hundred two billion, one hundred twenty-two million, one hundred forty-four thousand, one hundred thirty-one".