2131842 has 8 divisors (see below), whose sum is σ = 4263696. Its totient is φ = 710612.

The previous prime is 2131837. The next prime is 2131849. The reversal of 2131842 is 2481312.

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

2131842 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (2131849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177648 + ... + 177659.

It is an arithmetic number, because the mean of its divisors is an integer number (532962).

2^2131842 is an apocalyptic number.

2131842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2131842 is a wasteful number, since it uses less digits than its factorization.

2131842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355312.

The product of its digits is 384, while the sum is 21.

The square root of 2131842 is about 1460.0828743602. The cubic root of 2131842 is about 128.7019137359.

The spelling of 2131842 in words is "two million, one hundred thirty-one thousand, eight hundred forty-two".