12142157493 has 32 divisors (see below), whose sum is σ = 17002043136. Its totient is φ = 7693221888.

The previous prime is 12142157491. The next prime is 12142157497. The reversal of 12142157493 is 39475124121.

It is not a de Polignac number, because 12142157493 - 2¹ = 12142157491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12142157491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10869771 + ... + 10870887.

It is an arithmetic number, because the mean of its divisors is an integer number (531313848).

Almost surely, 2^12142157493 is an apocalyptic number.

It is an amenable number.

12142157493 is a deficient number, since it is larger than the sum of its proper divisors (4859885643).

12142157493 is a wasteful number, since it uses less digits than its factorization.

12142157493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013.

The product of its digits is 60480, while the sum is 39.

The spelling of 12142157493 in words is "twelve billion, one hundred forty-two million, one hundred fifty-seven thousand, four hundred ninety-three".