2131242 has 16 divisors (see below), whose sum is σ = 4276800. Its totient is φ = 708032.

The previous prime is 2131231. The next prime is 2131243. The reversal of 2131242 is 2421312.

It is not an unprimeable number, because it can be changed into a prime (2131243) 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 7 ways as a sum of consecutive naturals, for example, 3259 + ... + 3857.

It is an arithmetic number, because the mean of its divisors is an integer number (267300).

2^2131242 is an apocalyptic number.

2131242 is an abundant number, since it is smaller than the sum of its proper divisors (2145558).

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

2131242 is a wasteful number, since it uses less digits than its factorization.

2131242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197.

The product of its digits is 96, while the sum is 15.

The square root of 2131242 is about 1459.8773921121. The cubic root of 2131242 is about 128.6898383579.

Adding to 2131242 its reverse (2421312), we get a palindrome (4552554).

The spelling of 2131242 in words is "two million, one hundred thirty-one thousand, two hundred forty-two".