15727442542 has 16 divisors (see below), whose sum is σ = 26998433280. Its totient is φ = 6731056728.

The previous prime is 15727442513. The next prime is 15727442569. The reversal of 15727442542 is 24524472751.

It is a super-2 number, since 2×15727442542² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 762442 + ... + 782797.

It is an arithmetic number, because the mean of its divisors is an integer number (1687402080).

Almost surely, 2^15727442542 is an apocalyptic number.

15727442542 is a deficient number, since it is larger than the sum of its proper divisors (11270990738).

15727442542 is a wasteful number, since it uses less digits than its factorization.

15727442542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545975.

The product of its digits is 627200, while the sum is 43.

The spelling of 15727442542 in words is "fifteen billion, seven hundred twenty-seven million, four hundred forty-two thousand, five hundred forty-two".