15223137142 has 4 divisors (see below), whose sum is σ = 22834705716. Its totient is φ = 7611568570.

The previous prime is 15223137133. The next prime is 15223137151. The reversal of 15223137142 is 24173132251.

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

It is an interprime number because it is at equal distance from previous prime (15223137133) and next prime (15223137151).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3805784284 + ... + 3805784287.

It is an arithmetic number, because the mean of its divisors is an integer number (5708676429).

Almost surely, 2^15223137142 is an apocalyptic number.

15223137142 is a deficient number, since it is larger than the sum of its proper divisors (7611568574).

15223137142 is an equidigital number, since it uses as much as digits as its factorization.

15223137142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7611568573.

The product of its digits is 10080, while the sum is 31.

Adding to 15223137142 its reverse (24173132251), we get a palindrome (39396269393).

The spelling of 15223137142 in words is "fifteen billion, two hundred twenty-three million, one hundred thirty-seven thousand, one hundred forty-two".