842940670 has 128 divisors (see below), whose sum is σ = 1849236480. Its totient is φ = 272609280.

The previous prime is 842940667. The next prime is 842940671. The reversal of 842940670 is 76049248.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842940671) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8183839 + ... + 8183941.

It is an arithmetic number, because the mean of its divisors is an integer number (14447160).

Almost surely, 2^842940670 is an apocalyptic number.

842940670 is an abundant number, since it is smaller than the sum of its proper divisors (1006295810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

842940670 is a wasteful number, since it uses less digits than its factorization.

842940670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 842940670 is about 29033.4405470657. The cubic root of 842940670 is about 944.6385598334.

The spelling of 842940670 in words is "eight hundred forty-two million, nine hundred forty thousand, six hundred seventy".