142425719981 has 2 divisors, whose sum is σ = 142425719982. Its totient is φ = 142425719980.

The previous prime is 142425719977. The next prime is 142425720071. The reversal of 142425719981 is 189917524241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116386734025 + 26038985956 = 341155^2 + 161366^2 .

It is a cyclic number.

It is not a de Polignac number, because 142425719981 - 2² = 142425719977 is a prime.

It is a super-2 number, since 2×142425719981² (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 (142425719911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71212859990 + 71212859991.

It is an arithmetic number, because the mean of its divisors is an integer number (71212859991).

Almost surely, 2^142425719981 is an apocalyptic number.

It is an amenable number.

142425719981 is a deficient number, since it is larger than the sum of its proper divisors (1).

142425719981 is an equidigital number, since it uses as much as digits as its factorization.

142425719981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 53.

The spelling of 142425719981 in words is "one hundred forty-two billion, four hundred twenty-five million, seven hundred nineteen thousand, nine hundred eighty-one".