15242043642 has 64 divisors (see below), whose sum is σ = 36022662144. Its totient is φ = 4208895360.

The previous prime is 15242043631. The next prime is 15242043671. The reversal of 15242043642 is 24634024251.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142893 + ... + 225615.

It is an arithmetic number, because the mean of its divisors is an integer number (562854096).

Almost surely, 2^15242043642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15242043642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18011331072).

15242043642 is an abundant number, since it is smaller than the sum of its proper divisors (20780618502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15242043642 is a wasteful number, since it uses less digits than its factorization.

15242043642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82883.

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 15242043642 its reverse (24634024251), we get a palindrome (39876067893).

The spelling of 15242043642 in words is "fifteen billion, two hundred forty-two million, forty-three thousand, six hundred forty-two".