125424431 has 4 divisors (see below), whose sum is σ = 136826664. Its totient is φ = 114022200.

The previous prime is 125424389. The next prime is 125424443. The reversal of 125424431 is 134424521.

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-125424431 is a prime.

It is a super-3 number, since 3×125424431³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 125424431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125424031) 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, 5701100 + ... + 5701121.

It is an arithmetic number, because the mean of its divisors is an integer number (34206666).

Almost surely, 2^125424431 is an apocalyptic number.

125424431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

125424431 is a deficient number, since it is larger than the sum of its proper divisors (11402233).

125424431 is a wasteful number, since it uses less digits than its factorization.

125424431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11402232.

The product of its digits is 3840, while the sum is 26.

The square root of 125424431 is about 11199.3049337894. The cubic root of 125424431 is about 500.5652687018.

Adding to 125424431 its reverse (134424521), we get a palindrome (259848952).

The spelling of 125424431 in words is "one hundred twenty-five million, four hundred twenty-four thousand, four hundred thirty-one".