2131442 has 8 divisors (see below), whose sum is σ = 3307500. Its totient is φ = 1028944.

The previous prime is 2131429. The next prime is 2131447. The reversal of 2131442 is 2441312.

It can be written as a sum of positive squares in 2 ways, for example, as 2042041 + 89401 = 1429^2 + 299^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2131442.

It is not an unprimeable number, because it can be changed into a prime (2131447) 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, 18317 + ... + 18432.

2^2131442 is an apocalyptic number.

2131442 is a deficient number, since it is larger than the sum of its proper divisors (1176058).

2131442 is a wasteful number, since it uses less digits than its factorization.

2131442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36780.

The product of its digits is 192, while the sum is 17.

The square root of 2131442 is about 1459.9458894082. The cubic root of 2131442 is about 128.6938637357.

Adding to 2131442 its reverse (2441312), we get a palindrome (4572754).

The spelling of 2131442 in words is "two million, one hundred thirty-one thousand, four hundred forty-two".