120915487 has 24 divisors (see below), whose sum is σ = 161533440. Its totient is φ = 89253360.

The previous prime is 120915463. The next prime is 120915493. The reversal of 120915487 is 784519021.

It is a de Polignac number, because none of the positive numbers 2^k-120915487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120915427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4338 + ... + 16144.

It is an arithmetic number, because the mean of its divisors is an integer number (6730560).

Almost surely, 2^120915487 is an apocalyptic number.

120915487 is a deficient number, since it is larger than the sum of its proper divisors (40617953).

120915487 is a wasteful number, since it uses less digits than its factorization.

120915487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11851 (or 11844 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 120915487 is about 10996.1578289874. The cubic root of 120915487 is about 494.4935635960.

It can be divided in two parts, 12091 and 5487, that added together give a triangular number (17578 = T₁₈₇).

The spelling of 120915487 in words is "one hundred twenty million, nine hundred fifteen thousand, four hundred eighty-seven".