123124145252 has 6 divisors (see below), whose sum is σ = 215467254198. Its totient is φ = 61562072624.

The previous prime is 123124145239. The next prime is 123124145281. The reversal of 123124145252 is 252541421321.

It can be written as a sum of positive squares in only one way, i.e., 117241868836 + 5882276416 = 342406^2 + 76696^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15390518153 + ... + 15390518160.

It is an arithmetic number, because the mean of its divisors is an integer number (35911209033).

Almost surely, 2^123124145252 is an apocalyptic number.

It is an amenable number.

123124145252 is a deficient number, since it is larger than the sum of its proper divisors (92343108946).

123124145252 is a wasteful number, since it uses less digits than its factorization.

123124145252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30781036317 (or 30781036315 counting only the distinct ones).

The product of its digits is 19200, while the sum is 32.

Adding to 123124145252 its reverse (252541421321), we get a palindrome (375665566573).

The spelling of 123124145252 in words is "one hundred twenty-three billion, one hundred twenty-four million, one hundred forty-five thousand, two hundred fifty-two".