15742240315 has 4 divisors (see below), whose sum is σ = 18890688384. Its totient is φ = 12593792248.

The previous prime is 15742240303. The next prime is 15742240343. The reversal of 15742240315 is 51304224751.

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

It is a cyclic number.

It is not a de Polignac number, because 15742240315 - 2³³ = 7152305723 is a prime.

It is a super-2 number, since 2×15742240315² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 1574224027 + ... + 1574224036.

It is an arithmetic number, because the mean of its divisors is an integer number (4722672096).

Almost surely, 2^15742240315 is an apocalyptic number.

15742240315 is a deficient number, since it is larger than the sum of its proper divisors (3148448069).

15742240315 is an equidigital number, since it uses as much as digits as its factorization.

15742240315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3148448068.

The product of its (nonzero) digits is 33600, while the sum is 34.

The spelling of 15742240315 in words is "fifteen billion, seven hundred forty-two million, two hundred forty thousand, three hundred fifteen".