120008520 has 64 divisors (see below), whose sum is σ = 400032000. Its totient is φ = 32001984.

The previous prime is 120008519. The next prime is 120008521. The reversal of 120008520 is 25800021.

It is an interprime number because it is at equal distance from previous prime (120008519) and next prime (120008521).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 120008493 and 120008502.

It is not an unprimeable number, because it can be changed into a prime (120008521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54480 + ... + 56639.

It is an arithmetic number, because the mean of its divisors is an integer number (6250500).

Almost surely, 2^120008520 is an apocalyptic number.

120008520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120008520 is an abundant number, since it is smaller than the sum of its proper divisors (280023480).

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

120008520 is a wasteful number, since it uses less digits than its factorization.

120008520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111139 (or 111129 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 120008520 is about 10954.8400262167. The cubic root of 120008520 is about 493.2540879937.

Adding to 120008520 its reverse (25800021), we get a palindrome (145808541).

The spelling of 120008520 in words is "one hundred twenty million, eight thousand, five hundred twenty".