142971563837 has 2 divisors, whose sum is σ = 142971563838. Its totient is φ = 142971563836.

The previous prime is 142971563821. The next prime is 142971563897. The reversal of 142971563837 is 738365179241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82055894116 + 60915669721 = 286454^2 + 246811^2 .

It is a cyclic number.

It is not a de Polignac number, because 142971563837 - 2⁴ = 142971563821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142971563897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71485781918 + 71485781919.

It is an arithmetic number, because the mean of its divisors is an integer number (71485781919).

Almost surely, 2^142971563837 is an apocalyptic number.

It is an amenable number.

142971563837 is a deficient number, since it is larger than the sum of its proper divisors (1).

142971563837 is an equidigital number, since it uses as much as digits as its factorization.

142971563837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7620480, while the sum is 56.

The spelling of 142971563837 in words is "one hundred forty-two billion, nine hundred seventy-one million, five hundred sixty-three thousand, eight hundred thirty-seven".