131125426 has 8 divisors (see below), whose sum is σ = 198429084. Its totient is φ = 64982400.

The previous prime is 131125409. The next prime is 131125433. The reversal of 131125426 is 624521131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 131125401 + 25 = 11451^2 + 5^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 131125426.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289875 + ... + 290326.

Almost surely, 2^131125426 is an apocalyptic number.

131125426 is a deficient number, since it is larger than the sum of its proper divisors (67303658).

131125426 is a wasteful number, since it uses less digits than its factorization.

131125426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580316.

The product of its digits is 1440, while the sum is 25.

The square root of 131125426 is about 11451.0010916077. The cubic root of 131125426 is about 508.0373445793.

Subtracting from 131125426 its sum of digits (25), we obtain a square (131125401 = 11451²).

Adding to 131125426 its reverse (624521131), we get a palindrome (755646557).

The spelling of 131125426 in words is "one hundred thirty-one million, one hundred twenty-five thousand, four hundred twenty-six".