15128242 has 8 divisors (see below), whose sum is σ = 22727916. Its totient is φ = 7552272.

The previous prime is 15128233. The next prime is 15128251. The reversal of 15128242 is 24282151.

It is an interprime number because it is at equal distance from previous prime (15128233) and next prime (15128251).

It can be written as a sum of positive squares in 2 ways, for example, as 13461561 + 1666681 = 3669^2 + 1291^2 .

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

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, 4233 + ... + 6940.

Almost surely, 2^15128242 is an apocalyptic number.

15128242 is a deficient number, since it is larger than the sum of its proper divisors (7599674).

15128242 is a wasteful number, since it uses less digits than its factorization.

15128242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11852.

The product of its digits is 1280, while the sum is 25.

The square root of 15128242 is about 3889.5040814993. The cubic root of 15128242 is about 247.3220405590.

The spelling of 15128242 in words is "fifteen million, one hundred twenty-eight thousand, two hundred forty-two".