125843131 has 4 divisors (see below), whose sum is σ = 126761832. Its totient is φ = 124924432.

The previous prime is 125843101. The next prime is 125843149. The reversal of 125843131 is 131348521.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125843131 is a prime.

It is a super-2 number, since 2×125843131² = 31672987239766322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125843131.

It is not an unprimeable number, because it can be changed into a prime (125843101) 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, 459145 + ... + 459418.

It is an arithmetic number, because the mean of its divisors is an integer number (31690458).

Almost surely, 2^125843131 is an apocalyptic number.

125843131 is a deficient number, since it is larger than the sum of its proper divisors (918701).

125843131 is an equidigital number, since it uses as much as digits as its factorization.

125843131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918700.

The product of its digits is 2880, while the sum is 28.

The square root of 125843131 is about 11217.9824834950. The cubic root of 125843131 is about 501.1216565582.

The spelling of 125843131 in words is "one hundred twenty-five million, eight hundred forty-three thousand, one hundred thirty-one".