842864023 has 4 divisors (see below), whose sum is σ = 856681528. Its totient is φ = 829046520.

The previous prime is 842863993. The next prime is 842864039. The reversal of 842864023 is 320468248.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-842864023 is a prime.

It is a super-2 number, since 2×842864023² = 1420839522535489058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842864083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6908661 + ... + 6908782.

It is an arithmetic number, because the mean of its divisors is an integer number (214170382).

Almost surely, 2^842864023 is an apocalyptic number.

842864023 is a deficient number, since it is larger than the sum of its proper divisors (13817505).

842864023 is a wasteful number, since it uses less digits than its factorization.

842864023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13817504.

The product of its (nonzero) digits is 73728, while the sum is 37.

The square root of 842864023 is about 29032.1205391546. The cubic root of 842864023 is about 944.6099275667.

The spelling of 842864023 in words is "eight hundred forty-two million, eight hundred sixty-four thousand, twenty-three".