864552842 has 32 divisors (see below), whose sum is σ = 1385596800. Its totient is φ = 403685568.

The previous prime is 864552823. The next prime is 864552847. The reversal of 864552842 is 248255468.

It is a super-2 number, since 2×864552842² = 1494903233220553928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 864552793 and 864552802.

It is not an unprimeable number, because it can be changed into a prime (864552847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 425084 + ... + 427112.

It is an arithmetic number, because the mean of its divisors is an integer number (43299900).

Almost surely, 2^864552842 is an apocalyptic number.

864552842 is a deficient number, since it is larger than the sum of its proper divisors (521043958).

864552842 is a wasteful number, since it uses less digits than its factorization.

864552842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270.

The product of its digits is 614400, while the sum is 44.

The square root of 864552842 is about 29403.2794429465. The cubic root of 864552842 is about 952.6437318433.

The spelling of 864552842 in words is "eight hundred sixty-four million, five hundred fifty-two thousand, eight hundred forty-two".