842449131 has 12 divisors (see below), whose sum is σ = 1220004240. Its totient is φ = 560186640.

The previous prime is 842449123. The next prime is 842449133. The reversal of 842449131 is 131944248.

It is a happy number.

842449131 is a `hidden beast` number, since 84 + 2 + 449 + 131 = 666.

842449131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 842449131 - 2³ = 842449123 is a prime.

It is a super-2 number, since 2×842449131² = 1419441076645310322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (842449133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116815 + ... + 123816.

It is an arithmetic number, because the mean of its divisors is an integer number (101667020).

Almost surely, 2^842449131 is an apocalyptic number.

842449131 is a deficient number, since it is larger than the sum of its proper divisors (377555109).

842449131 is a wasteful number, since it uses less digits than its factorization.

842449131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241026 (or 241023 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 842449131 is about 29024.9742635545. The cubic root of 842449131 is about 944.4549103026.

The spelling of 842449131 in words is "eight hundred forty-two million, four hundred forty-nine thousand, one hundred thirty-one".