142971563849 has 16 divisors (see below), whose sum is σ = 148329446400. Its totient is φ = 137721390144.

The previous prime is 142971563837. The next prime is 142971563897. The reversal of 142971563849 is 948365179241.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-142971563849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142971563149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1116287 + ... + 1237755.

It is an arithmetic number, because the mean of its divisors is an integer number (9270590400).

Almost surely, 2^142971563849 is an apocalyptic number.

It is an amenable number.

142971563849 is a deficient number, since it is larger than the sum of its proper divisors (5357882551).

142971563849 is a wasteful number, since it uses less digits than its factorization.

142971563849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121912.

The product of its digits is 13063680, while the sum is 59.

The spelling of 142971563849 in words is "one hundred forty-two billion, nine hundred seventy-one million, five hundred sixty-three thousand, eight hundred forty-nine".