87120427 has 8 divisors (see below), whose sum is σ = 92334816. Its totient is φ = 81916032.

The previous prime is 87120421. The next prime is 87120433. The reversal of 87120427 is 72402178.

It is an interprime number because it is at equal distance from previous prime (87120421) and next prime (87120433).

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

It is a cyclic number.

It is not a de Polignac number, because 87120427 - 2³ = 87120419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87120421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22938 + ... + 26464.

It is an arithmetic number, because the mean of its divisors is an integer number (11541852).

Almost surely, 2^87120427 is an apocalyptic number.

87120427 is a deficient number, since it is larger than the sum of its proper divisors (5214389).

87120427 is a wasteful number, since it uses less digits than its factorization.

87120427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4997.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 87120427 is about 9333.8323854674. The cubic root of 87120427 is about 443.3091191604.

The spelling of 87120427 in words is "eighty-seven million, one hundred twenty thousand, four hundred twenty-seven".