126549234831 has 4 divisors (see below), whose sum is σ = 168732313112. Its totient is φ = 84366156552.

The previous prime is 126549234787. The next prime is 126549234859. The reversal of 126549234831 is 138432945621.

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

It is not a de Polignac number, because 126549234831 - 2¹¹ = 126549232783 is a prime.

It is a super-2 number, since 2×126549234831² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126549234431) 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, 21091539136 + ... + 21091539141.

It is an arithmetic number, because the mean of its divisors is an integer number (42183078278).

Almost surely, 2^126549234831 is an apocalyptic number.

126549234831 is a deficient number, since it is larger than the sum of its proper divisors (42183078281).

126549234831 is an equidigital number, since it uses as much as digits as its factorization.

126549234831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42183078280.

The product of its digits is 1244160, while the sum is 48.

The spelling of 126549234831 in words is "one hundred twenty-six billion, five hundred forty-nine million, two hundred thirty-four thousand, eight hundred thirty-one".