142305235081 has 2 divisors, whose sum is σ = 142305235082. Its totient is φ = 142305235080.

The previous prime is 142305235069. The next prime is 142305235091. The reversal of 142305235081 is 180532503241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131272883856 + 11032351225 = 362316^2 + 105035^2 .

It is an emirp because it is prime and its reverse (180532503241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142305235081 - 2²⁷ = 142171017353 is a prime.

It is a super-2 number, since 2×142305235081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142305235091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71152617540 + 71152617541.

It is an arithmetic number, because the mean of its divisors is an integer number (71152617541).

Almost surely, 2^142305235081 is an apocalyptic number.

It is an amenable number.

142305235081 is a deficient number, since it is larger than the sum of its proper divisors (1).

142305235081 is an equidigital number, since it uses as much as digits as its factorization.

142305235081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 142305235081 in words is "one hundred forty-two billion, three hundred five million, two hundred thirty-five thousand, eighty-one".