123243125 has 20 divisors (see below), whose sum is σ = 154759836. Its totient is φ = 98112000.

The previous prime is 123243103. The next prime is 123243151. The reversal of 123243125 is 521342321.

It can be written as a sum of positive squares in 10 ways, for example, as 73427761 + 49815364 = 8569^2 + 7058^2 .

It is not a de Polignac number, because 123243125 - 2⁸ = 123242869 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 123243125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 182789 + ... + 183461.

Almost surely, 2^123243125 is an apocalyptic number.

It is an amenable number.

123243125 is a deficient number, since it is larger than the sum of its proper divisors (31516711).

123243125 is an frugal number, since it uses more digits than its factorization.

123243125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986 (or 971 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 123243125 is about 11101.4920168417. The cubic root of 123243125 is about 497.6464388828.

Adding to 123243125 its reverse (521342321), we get a palindrome (644585446).

The spelling of 123243125 in words is "one hundred twenty-three million, two hundred forty-three thousand, one hundred twenty-five".