117240520 has 32 divisors (see below), whose sum is σ = 264121920. Its totient is φ = 46837440.

The previous prime is 117240511. The next prime is 117240547. The reversal of 117240520 is 25042711.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 117240491 and 117240500.

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, 45589 + ... + 48091.

It is an arithmetic number, because the mean of its divisors is an integer number (8253810).

Almost surely, 2^117240520 is an apocalyptic number.

117240520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117240520 is an abundant number, since it is smaller than the sum of its proper divisors (146881400).

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

117240520 is a wasteful number, since it uses less digits than its factorization.

117240520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3685 (or 3681 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 117240520 is about 10827.7661592777. The cubic root of 117240520 is about 489.4322453636.

The spelling of 117240520 in words is "one hundred seventeen million, two hundred forty thousand, five hundred twenty".