15534244142 has 8 divisors (see below), whose sum is σ = 23440895856. Its totient is φ = 7720612192.

The previous prime is 15534244129. The next prime is 15534244157. The reversal of 15534244142 is 24144243551.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×15534244142² (a number of 21 digits) contains 22 as substring.

It is a congruent 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, 23254523 + ... + 23255190.

It is an arithmetic number, because the mean of its divisors is an integer number (2930111982).

Almost surely, 2^15534244142 is an apocalyptic number.

15534244142 is a deficient number, since it is larger than the sum of its proper divisors (7906651714).

15534244142 is a wasteful number, since it uses less digits than its factorization.

15534244142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46509882.

The product of its digits is 76800, while the sum is 35.

Adding to 15534244142 its reverse (24144243551), we get a palindrome (39678487693).

The spelling of 15534244142 in words is "fifteen billion, five hundred thirty-four million, two hundred forty-four thousand, one hundred forty-two".