15135242 has 8 divisors (see below), whose sum is σ = 23690016. Its totient is φ = 7238572.

The previous prime is 15135227. The next prime is 15135301. The reversal of 15135242 is 24253151.

15135242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164468 + ... + 164559.

It is an arithmetic number, because the mean of its divisors is an integer number (2961252).

Almost surely, 2^15135242 is an apocalyptic number.

15135242 is a deficient number, since it is larger than the sum of its proper divisors (8554774).

15135242 is a wasteful number, since it uses less digits than its factorization.

15135242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329052.

The product of its digits is 1200, while the sum is 23.

The square root of 15135242 is about 3890.4038350793. The cubic root of 15135242 is about 247.3601808649.

Adding to 15135242 its reverse (24253151), we get a palindrome (39388393).

The spelling of 15135242 in words is "fifteen million, one hundred thirty-five thousand, two hundred forty-two".