860172842 has 8 divisors (see below), whose sum is σ = 1298175456. Its totient is φ = 427447692.

The previous prime is 860172829. The next prime is 860172847. The reversal of 860172842 is 248271068.

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

It is a super-2 number, since 2×860172842² = 1479794636228713928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 860172796 and 860172805.

It is not an unprimeable number, because it can be changed into a prime (860172847) 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 3 ways as a sum of consecutive naturals, for example, 1318958 + ... + 1319609.

It is an arithmetic number, because the mean of its divisors is an integer number (162271932).

Almost surely, 2^860172842 is an apocalyptic number.

860172842 is a deficient number, since it is larger than the sum of its proper divisors (438002614).

860172842 is a wasteful number, since it uses less digits than its factorization.

860172842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2638732.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 860172842 is about 29328.7033808179. The cubic root of 860172842 is about 951.0322452959.

The spelling of 860172842 in words is "eight hundred sixty million, one hundred seventy-two thousand, eight hundred forty-two".