115042987 has 8 divisors (see below), whose sum is σ = 120155904. Its totient is φ = 109939368.

The previous prime is 115042969. The next prime is 115042997. The reversal of 115042987 is 789240511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115042987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115042937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38178 + ... + 41080.

It is an arithmetic number, because the mean of its divisors is an integer number (15019488).

Almost surely, 2^115042987 is an apocalyptic number.

115042987 is a deficient number, since it is larger than the sum of its proper divisors (5112917).

115042987 is a wasteful number, since it uses less digits than its factorization.

115042987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4649.

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

The square root of 115042987 is about 10725.8093867083. The cubic root of 115042987 is about 486.3549978451.

The spelling of 115042987 in words is "one hundred fifteen million, forty-two thousand, nine hundred eighty-seven".