123360520 has 16 divisors (see below), whose sum is σ = 277561260. Its totient is φ = 49344192.

The previous prime is 123360487. The next prime is 123360529. The reversal of 123360520 is 25063321.

It can be written as a sum of positive squares in 2 ways, for example, as 118243876 + 5116644 = 10874^2 + 2262^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123360491 and 123360500.

It is not an unprimeable number, because it can be changed into a prime (123360529) 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, 1541967 + ... + 1542046.

Almost surely, 2^123360520 is an apocalyptic number.

123360520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123360520 is an abundant number, since it is smaller than the sum of its proper divisors (154200740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123360520 is a wasteful number, since it uses less digits than its factorization.

123360520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3084024 (or 3084020 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 123360520 is about 11106.7781106854. The cubic root of 123360520 is about 497.8043994555.

The spelling of 123360520 in words is "one hundred twenty-three million, three hundred sixty thousand, five hundred twenty".