123342520 has 32 divisors (see below), whose sum is σ = 317167200. Its totient is φ = 42288768.

The previous prime is 123342517. The next prime is 123342553. The reversal of 123342520 is 25243321.

It is a junction number, because it is equal to n+sod(n) for n = 123342491 and 123342500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219975 + ... + 220534.

It is an arithmetic number, because the mean of its divisors is an integer number (9911475).

Almost surely, 2^123342520 is an apocalyptic number.

123342520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123342520 is an abundant number, since it is smaller than the sum of its proper divisors (193824680).

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

123342520 is a wasteful number, since it uses less digits than its factorization.

123342520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440527 (or 440523 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 123342520 is about 11105.9677651252. The cubic root of 123342520 is about 497.7801861036.

Adding to 123342520 its reverse (25243321), we get a palindrome (148585841).

The spelling of 123342520 in words is "one hundred twenty-three million, three hundred forty-two thousand, five hundred twenty".