842511994 has 8 divisors (see below), whose sum is σ = 1271335968. Its totient is φ = 418733340.

The previous prime is 842511961. The next prime is 842511997. The reversal of 842511994 is 499115248.

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

It is a self number, because there is not a number n which added to its sum of digits gives 842511994.

It is not an unprimeable number, because it can be changed into a prime (842511997) 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, 1260912 + ... + 1261579.

It is an arithmetic number, because the mean of its divisors is an integer number (158916996).

Almost surely, 2^842511994 is an apocalyptic number.

842511994 is a deficient number, since it is larger than the sum of its proper divisors (428823974).

842511994 is a wasteful number, since it uses less digits than its factorization.

842511994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522660.

The product of its digits is 103680, while the sum is 43.

The square root of 842511994 is about 29026.0571555973. The cubic root of 842511994 is about 944.4784012530.

The spelling of 842511994 in words is "eight hundred forty-two million, five hundred eleven thousand, nine hundred ninety-four".