2513642 has 4 divisors (see below), whose sum is σ = 3770466. Its totient is φ = 1256820.

The previous prime is 2513617. The next prime is 2513653. The reversal of 2513642 is 2463152.

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., 1590121 + 923521 = 1261^2 + 961^2 .

It is a super-2 number, since 2×2513642² = 12636792208328, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 628409 + ... + 628412.

2^2513642 is an apocalyptic number.

2513642 is a deficient number, since it is larger than the sum of its proper divisors (1256824).

2513642 is a wasteful number, since it uses less digits than its factorization.

2513642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256823.

The product of its digits is 1440, while the sum is 23.

The square root of 2513642 is about 1585.4469401402. The cubic root of 2513642 is about 135.9673003852.

Adding to 2513642 its reverse (2463152), we get a palindrome (4976794).

The spelling of 2513642 in words is "two million, five hundred thirteen thousand, six hundred forty-two".