123240052 has 48 divisors (see below), whose sum is σ = 239600592. Its totient is φ = 55111680.

The previous prime is 123240043. The next prime is 123240067. The reversal of 123240052 is 250042321.

It can be written as a sum of positive squares in 8 ways, for example, as 4778596 + 118461456 = 2186^2 + 10884^2 .

It is a super-2 number, since 2×123240052² = 30376220833925408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267102 + ... + 267562.

It is an arithmetic number, because the mean of its divisors is an integer number (4991679).

Almost surely, 2^123240052 is an apocalyptic number.

It is an amenable number.

123240052 is a deficient number, since it is larger than the sum of its proper divisors (116360540).

123240052 is a wasteful number, since it uses less digits than its factorization.

123240052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628 (or 626 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 123240052 is about 11101.3536111593. The cubic root of 123240052 is about 497.6423026677.

Adding to 123240052 its reverse (250042321), we get a palindrome (373282373).

The spelling of 123240052 in words is "one hundred twenty-three million, two hundred forty thousand, fifty-two".