13251142 has 4 divisors (see below), whose sum is σ = 19876716. Its totient is φ = 6625570.

The previous prime is 13251137. The next prime is 13251157. The reversal of 13251142 is 24115231.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3312784 + ... + 3312787.

It is an arithmetic number, because the mean of its divisors is an integer number (4969179).

Almost surely, 2^13251142 is an apocalyptic number.

13251142 is a deficient number, since it is larger than the sum of its proper divisors (6625574).

13251142 is an equidigital number, since it uses as much as digits as its factorization.

13251142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6625573.

The product of its digits is 240, while the sum is 19.

The square root of 13251142 is about 3640.2118070244. The cubic root of 13251142 is about 236.6379726723.

Adding to 13251142 its reverse (24115231), we get a palindrome (37366373).

The spelling of 13251142 in words is "thirteen million, two hundred fifty-one thousand, one hundred forty-two".