15242144 has 12 divisors (see below), whose sum is σ = 30008034. Its totient is φ = 7621056.

The previous prime is 15242141. The next prime is 15242189. The reversal of 15242144 is 44124251.

It can be written as a sum of positive squares in only one way, i.e., 11478544 + 3763600 = 3388^2 + 1940^2 .

It is not an unprimeable number, because it can be changed into a prime (15242141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238127 + ... + 238190.

Almost surely, 2^15242144 is an apocalyptic number.

It is an amenable number.

15242144 is a deficient number, since it is larger than the sum of its proper divisors (14765890).

15242144 is an equidigital number, since it uses as much as digits as its factorization.

15242144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476327 (or 476319 counting only the distinct ones).

The product of its digits is 1280, while the sum is 23.

The square root of 15242144 is about 3904.1188506499. The cubic root of 15242144 is about 247.9411931325.

Adding to 15242144 its reverse (44124251), we get a palindrome (59366395).

The spelling of 15242144 in words is "fifteen million, two hundred forty-two thousand, one hundred forty-four".