842691940 has 24 divisors (see below), whose sum is σ = 1846595520. Its totient is φ = 322421088.

The previous prime is 842691931. The next prime is 842691943. The reversal of 842691940 is 49196248.

842691940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (842691943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 915510 + ... + 916429.

It is an arithmetic number, because the mean of its divisors is an integer number (76941480).

Almost surely, 2^842691940 is an apocalyptic number.

It is an amenable number.

842691940 is an abundant number, since it is smaller than the sum of its proper divisors (1003903580).

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

842691940 is a wasteful number, since it uses less digits than its factorization.

842691940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831971 (or 1831969 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 842691940 is about 29029.1567221647. The cubic root of 842691940 is about 944.5456378871.

The spelling of 842691940 in words is "eight hundred forty-two million, six hundred ninety-one thousand, nine hundred forty".