842661312 has 28 divisors (see below), whose sum is σ = 2229541896. Its totient is φ = 280887040.

The previous prime is 842661311. The next prime is 842661319. The reversal of 842661312 is 213166248.

It is a super-2 number, since 2×842661312² = 1420156173483122688, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842661311) 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, 2194239 + ... + 2194622.

Almost surely, 2^842661312 is an apocalyptic number.

It is an amenable number.

842661312 is an abundant number, since it is smaller than the sum of its proper divisors (1386880584).

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

842661312 is a wasteful number, since it uses less digits than its factorization.

842661312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4388876 (or 4388866 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 842661312 is about 29028.6291787952. The cubic root of 842661312 is about 944.5341944430.

The spelling of 842661312 in words is "eight hundred forty-two million, six hundred sixty-one thousand, three hundred twelve".