15135442 has 32 divisors (see below), whose sum is σ = 27141120. Its totient is φ = 6194880.

The previous prime is 15135433. The next prime is 15135467. The reversal of 15135442 is 24453151.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31359 + ... + 31837.

It is an arithmetic number, because the mean of its divisors is an integer number (848160).

Almost surely, 2^15135442 is an apocalyptic number.

15135442 is a deficient number, since it is larger than the sum of its proper divisors (12005678).

15135442 is a wasteful number, since it uses less digits than its factorization.

15135442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586.

The product of its digits is 2400, while the sum is 25.

The square root of 15135442 is about 3890.4295392668. The cubic root of 15135442 is about 247.3612704151.

Adding to 15135442 its reverse (24453151), we get a palindrome (39588593).

The spelling of 15135442 in words is "fifteen million, one hundred thirty-five thousand, four hundred forty-two".