2523442 has 4 divisors (see below), whose sum is σ = 3785166. Its totient is φ = 1261720.

The previous prime is 2523419. The next prime is 2523457. The reversal of 2523442 is 2443252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1565001 + 958441 = 1251^2 + 979^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630859 + ... + 630862.

2^2523442 is an apocalyptic number.

2523442 is a deficient number, since it is larger than the sum of its proper divisors (1261724).

2523442 is a wasteful number, since it uses less digits than its factorization.

2523442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261723.

The product of its digits is 1920, while the sum is 22.

The square root of 2523442 is about 1588.5345447928. The cubic root of 2523442 is about 136.1437709709.

Adding to 2523442 its reverse (2443252), we get a palindrome (4966694).

The spelling of 2523442 in words is "two million, five hundred twenty-three thousand, four hundred forty-two".