15120242 has 8 divisors (see below), whose sum is σ = 24014556. Its totient is φ = 7115392.

The previous prime is 15120241. The next prime is 15120251. The reversal of 15120242 is 24202151.

It can be written as a sum of positive squares in 2 ways, for example, as 15062161 + 58081 = 3881^2 + 241^2 .

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 (17).

It is a self number, because there is not a number n which added to its sum of digits gives 15120242.

It is not an unprimeable number, because it can be changed into a prime (15120241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222323 + ... + 222390.

Almost surely, 2^15120242 is an apocalyptic number.

15120242 is a deficient number, since it is larger than the sum of its proper divisors (8894314).

15120242 is a wasteful number, since it uses less digits than its factorization.

15120242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444732.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 15120242 is about 3888.4755367624. The cubic root of 15120242 is about 247.2784372289.

Adding to 15120242 its reverse (24202151), we get a palindrome (39322393).

The spelling of 15120242 in words is "fifteen million, one hundred twenty thousand, two hundred forty-two".