123443125 has 20 divisors (see below), whose sum is σ = 166131196. Its totient is φ = 91152000.

The previous prime is 123443123. The next prime is 123443129. The reversal of 123443125 is 521344321.

It can be written as a sum of positive squares in 10 ways, for example, as 80120401 + 43322724 = 8951^2 + 6582^2 .

It is not a de Polignac number, because 123443125 - 2¹ = 123443123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 123443125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123443123) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 529 + ... + 15721.

Almost surely, 2^123443125 is an apocalyptic number.

It is an amenable number.

123443125 is a deficient number, since it is larger than the sum of its proper divisors (42688071).

123443125 is an equidigital number, since it uses as much as digits as its factorization.

123443125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15226 (or 15211 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 123443125 is about 11110.4961635383. The cubic root of 123443125 is about 497.9154883660.

Adding to 123443125 its reverse (521344321), we get a palindrome (644787446).

The spelling of 123443125 in words is "one hundred twenty-three million, four hundred forty-three thousand, one hundred twenty-five".