842390163 has 12 divisors (see below), whose sum is σ = 1217957208. Its totient is φ = 561052800.

The previous prime is 842390149. The next prime is 842390177. The reversal of 842390163 is 361093248.

It is an interprime number because it is at equal distance from previous prime (842390149) and next prime (842390177).

It is not a de Polignac number, because 842390163 - 2⁸ = 842389907 is a prime.

It is a super-3 number, since 3×842390163³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (842390113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35070 + ... + 53987.

It is an arithmetic number, because the mean of its divisors is an integer number (101496434).

Almost surely, 2^842390163 is an apocalyptic number.

842390163 is a deficient number, since it is larger than the sum of its proper divisors (375567045).

842390163 is a wasteful number, since it uses less digits than its factorization.

842390163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90114 (or 90111 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 842390163 is about 29023.9584309239. The cubic root of 842390163 is about 944.4328737924.

The spelling of 842390163 in words is "eight hundred forty-two million, three hundred ninety thousand, one hundred sixty-three".