2142544 has 20 divisors (see below), whose sum is σ = 4395924. Its totient is φ = 1008128.

The previous prime is 2142541. The next prime is 2142551. The reversal of 2142544 is 4452412.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 976144 + 1166400 = 988^2 + 1080^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142541) 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, 3667 + ... + 4210.

2^2142544 is an apocalyptic number.

It is an amenable number.

2142544 is an abundant number, since it is smaller than the sum of its proper divisors (2253380).

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

2142544 is a wasteful number, since it uses less digits than its factorization.

2142544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7902 (or 7896 counting only the distinct ones).

The product of its digits is 1280, while the sum is 22.

The square root of 2142544 is about 1463.7431468670. The cubic root of 2142544 is about 128.9169186407.

Adding to 2142544 its reverse (4452412), we get a palindrome (6594956).

The spelling of 2142544 in words is "two million, one hundred forty-two thousand, five hundred forty-four".