870087242 has 4 divisors (see below), whose sum is σ = 1305130866. Its totient is φ = 435043620.

The previous prime is 870087221. The next prime is 870087289. The reversal of 870087242 is 242780078.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 829497601 + 40589641 = 28801^2 + 6371^2 .

It is a junction number, because it is equal to n+sod(n) for n = 870087196 and 870087205.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 217521809 + ... + 217521812.

Almost surely, 2^870087242 is an apocalyptic number.

870087242 is a deficient number, since it is larger than the sum of its proper divisors (435043624).

870087242 is a wasteful number, since it uses less digits than its factorization.

870087242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435043623.

The product of its (nonzero) digits is 50176, while the sum is 38.

The square root of 870087242 is about 29497.2412608366. The cubic root of 870087242 is about 954.6721797263.

The spelling of 870087242 in words is "eight hundred seventy million, eighty-seven thousand, two hundred forty-two".