15432242 has 16 divisors (see below), whose sum is σ = 26516160. Its totient is φ = 6598608.

The previous prime is 15432229. The next prime is 15432247. The reversal of 15432242 is 24223451.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (15432247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6809 + ... + 8787.

It is an arithmetic number, because the mean of its divisors is an integer number (1657260).

Almost surely, 2^15432242 is an apocalyptic number.

15432242 is a deficient number, since it is larger than the sum of its proper divisors (11083918).

15432242 is a wasteful number, since it uses less digits than its factorization.

15432242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2545.

The product of its digits is 1920, while the sum is 23.

The square root of 15432242 is about 3928.3892373338. The cubic root of 15432242 is about 248.9677006324.

Adding to 15432242 its reverse (24223451), we get a palindrome (39655693).

The spelling of 15432242 in words is "fifteen million, four hundred thirty-two thousand, two hundred forty-two".