15131442 has 32 divisors (see below), whose sum is σ = 31223808. Its totient is φ = 4885776.

The previous prime is 15131437. The next prime is 15131461. The reversal of 15131442 is 24413151.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57403 + ... + 57665.

It is an arithmetic number, because the mean of its divisors is an integer number (975744).

Almost surely, 2^15131442 is an apocalyptic number.

15131442 is an abundant number, since it is smaller than the sum of its proper divisors (16092366).

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

15131442 is a wasteful number, since it uses less digits than its factorization.

15131442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534.

The product of its digits is 480, while the sum is 21.

The square root of 15131442 is about 3889.9154232451. The cubic root of 15131442 is about 247.3394775870.

Adding to 15131442 its reverse (24413151), we get a palindrome (39544593).

The spelling of 15131442 in words is "fifteen million, one hundred thirty-one thousand, four hundred forty-two".