842164477 has 24 divisors (see below), whose sum is σ = 1083773376. Its totient is φ = 640200000.

The previous prime is 842164469. The next prime is 842164501. The reversal of 842164477 is 774461248.

It is not a de Polignac number, because 842164477 - 2³ = 842164469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842164277) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22602 + ... + 46852.

It is an arithmetic number, because the mean of its divisors is an integer number (45157224).

Almost surely, 2^842164477 is an apocalyptic number.

It is an amenable number.

842164477 is a deficient number, since it is larger than the sum of its proper divisors (241608899).

842164477 is a wasteful number, since it uses less digits than its factorization.

842164477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24321 (or 24310 counting only the distinct ones).

The product of its digits is 301056, while the sum is 43.

The square root of 842164477 is about 29020.0702445738. The cubic root of 842164477 is about 944.3485247878.

The spelling of 842164477 in words is "eight hundred forty-two million, one hundred sixty-four thousand, four hundred seventy-seven".