15206242 has 4 divisors (see below), whose sum is σ = 22809366. Its totient is φ = 7603120.

The previous prime is 15206227. The next prime is 15206267. The reversal of 15206242 is 24260251.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14447601 + 758641 = 3801^2 + 871^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3801559 + ... + 3801562.

Almost surely, 2^15206242 is an apocalyptic number.

15206242 is a deficient number, since it is larger than the sum of its proper divisors (7603124).

15206242 is an equidigital number, since it uses as much as digits as its factorization.

15206242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7603123.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 15206242 is about 3899.5181753647. The cubic root of 15206242 is about 247.7463696454.

Adding to 15206242 its reverse (24260251), we get a palindrome (39466493).

The spelling of 15206242 in words is "fifteen million, two hundred six thousand, two hundred forty-two".