72422134242131 has 4 divisors (see below), whose sum is σ = 72436398996912. Its totient is φ = 72407869487352.

The previous prime is 72422134242047. The next prime is 72422134242137. The reversal of 72422134242131 is 13124243122427.

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 72422134242131 - 2²⁶ = 72422067133267 is a prime.

It is a super-2 number, since 2×72422134242131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72422134242137) 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, 7132369775 + ... + 7132379928.

It is an arithmetic number, because the mean of its divisors is an integer number (18109099749228).

Almost surely, 2^{72422134242131} is an apocalyptic number.

72422134242131 is a deficient number, since it is larger than the sum of its proper divisors (14264754781).

72422134242131 is a wasteful number, since it uses less digits than its factorization.

72422134242131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14264754780.

The product of its digits is 129024, while the sum is 38.

Adding to 72422134242131 its reverse (13124243122427), we get a palindrome (85546377364558).

The spelling of 72422134242131 in words is "seventy-two trillion, four hundred twenty-two billion, one hundred thirty-four million, two hundred forty-two thousand, one hundred thirty-one".