131452402442 has 4 divisors (see below), whose sum is σ = 197178603666. Its totient is φ = 65726201220.

The previous prime is 131452402399. The next prime is 131452402447. The reversal of 131452402442 is 244204254131.

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

It can be written as a sum of positive squares in only one way, i.e., 131443227601 + 9174841 = 362551^2 + 3029^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131452402399 and 131452402408.

It is not an unprimeable number, because it can be changed into a prime (131452402447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32863100609 + ... + 32863100612.

Almost surely, 2^131452402442 is an apocalyptic number.

131452402442 is a deficient number, since it is larger than the sum of its proper divisors (65726201224).

131452402442 is an equidigital number, since it uses as much as digits as its factorization.

131452402442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65726201223.

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 131452402442 its reverse (244204254131), we get a palindrome (375656656573).

The spelling of 131452402442 in words is "one hundred thirty-one billion, four hundred fifty-two million, four hundred two thousand, four hundred forty-two".