142031944669 has 2 divisors, whose sum is σ = 142031944670. Its totient is φ = 142031944668.

The previous prime is 142031944609. The next prime is 142031944739. The reversal of 142031944669 is 966449130241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97117619769 + 44914324900 = 311637^2 + 211930^2 .

It is a cyclic number.

It is not a de Polignac number, because 142031944669 - 2²¹ = 142029847517 is a prime.

It is a super-2 number, since 2×142031944669² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142031944609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71015972334 + 71015972335.

It is an arithmetic number, because the mean of its divisors is an integer number (71015972335).

Almost surely, 2^142031944669 is an apocalyptic number.

It is an amenable number.

142031944669 is a deficient number, since it is larger than the sum of its proper divisors (1).

142031944669 is an equidigital number, since it uses as much as digits as its factorization.

142031944669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1119744, while the sum is 49.

The spelling of 142031944669 in words is "one hundred forty-two billion, thirty-one million, nine hundred forty-four thousand, six hundred sixty-nine".