120087640 has 16 divisors (see below), whose sum is σ = 270197280. Its totient is φ = 48035040.

The previous prime is 120087631. The next prime is 120087659. The reversal of 120087640 is 46780021.

It is a junction number, because it is equal to n+sod(n) for n = 120087599 and 120087608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1501056 + ... + 1501135.

It is an arithmetic number, because the mean of its divisors is an integer number (16887330).

Almost surely, 2^120087640 is an apocalyptic number.

120087640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120087640 is an abundant number, since it is smaller than the sum of its proper divisors (150109640).

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

120087640 is a wasteful number, since it uses less digits than its factorization.

120087640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3002202 (or 3002198 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 120087640 is about 10958.4506204116. The cubic root of 120087640 is about 493.3624627715.

The spelling of 120087640 in words is "one hundred twenty million, eighty-seven thousand, six hundred forty".