15342742 has 4 divisors (see below), whose sum is σ = 23014116. Its totient is φ = 7671370.

The previous prime is 15342739. The next prime is 15342749. The reversal of 15342742 is 24724351.

15342742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 15342742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15342749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3835684 + ... + 3835687.

It is an arithmetic number, because the mean of its divisors is an integer number (5753529).

Almost surely, 2^15342742 is an apocalyptic number.

15342742 is a deficient number, since it is larger than the sum of its proper divisors (7671374).

15342742 is an equidigital number, since it uses as much as digits as its factorization.

15342742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7671373.

The product of its digits is 6720, while the sum is 28.

The square root of 15342742 is about 3916.9812355946. The cubic root of 15342742 is about 248.4854672910.

The spelling of 15342742 in words is "fifteen million, three hundred forty-two thousand, seven hundred forty-two".