12142855357 has 4 divisors (see below), whose sum is σ = 12205771900. Its totient is φ = 12079938816.

The previous prime is 12142855339. The next prime is 12142855367. The reversal of 12142855357 is 75355824121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5448506596 + 6694348761 = 73814^2 + 81819^2 .

It is a cyclic number.

It is not a de Polignac number, because 12142855357 - 2²³ = 12134466749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12142855327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31457982 + ... + 31458367.

It is an arithmetic number, because the mean of its divisors is an integer number (3051442975).

Almost surely, 2^12142855357 is an apocalyptic number.

It is an amenable number.

12142855357 is a deficient number, since it is larger than the sum of its proper divisors (62916543).

12142855357 is an equidigital number, since it uses as much as digits as its factorization.

12142855357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62916542.

The product of its digits is 336000, while the sum is 43.

The spelling of 12142855357 in words is "twelve billion, one hundred forty-two million, eight hundred fifty-five thousand, three hundred fifty-seven".