124242520 has 32 divisors (see below), whose sum is σ = 294260400. Its totient is φ = 47081088.

The previous prime is 124242499. The next prime is 124242551. The reversal of 124242520 is 25242421.

It is a junction number, because it is equal to n+sod(n) for n = 124242491 and 124242500.

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, 80979 + ... + 82498.

Almost surely, 2^124242520 is an apocalyptic number.

124242520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124242520 is an abundant number, since it is smaller than the sum of its proper divisors (170017880).

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

124242520 is a wasteful number, since it uses less digits than its factorization.

124242520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163507 (or 163503 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 124242520 is about 11146.4128758987. The cubic root of 124242520 is about 498.9879796784.

Adding to 124242520 its reverse (25242421), we get a palindrome (149484941).

Subtracting from 124242520 its reverse (25242421), we obtain a palindrome (99000099).

The spelling of 124242520 in words is "one hundred twenty-four million, two hundred forty-two thousand, five hundred twenty".