125424161 has 4 divisors (see below), whose sum is σ = 126081024. Its totient is φ = 124767300.

The previous prime is 125424157. The next prime is 125424179. The reversal of 125424161 is 161424521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125424161 - 2² = 125424157 is a prime.

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 125424161.

It is not an unprimeable number, because it can be changed into a prime (125424121) 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, 328145 + ... + 328526.

It is an arithmetic number, because the mean of its divisors is an integer number (31520256).

Almost surely, 2^125424161 is an apocalyptic number.

It is an amenable number.

125424161 is a deficient number, since it is larger than the sum of its proper divisors (656863).

125424161 is an equidigital number, since it uses as much as digits as its factorization.

125424161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656862.

The product of its digits is 1920, while the sum is 26.

The square root of 125424161 is about 11199.2928794634. The cubic root of 125424161 is about 500.5649095141.

Adding to 125424161 its reverse (161424521), we get a palindrome (286848682).

The spelling of 125424161 in words is "one hundred twenty-five million, four hundred twenty-four thousand, one hundred sixty-one".