142232341981 has 2 divisors, whose sum is σ = 142232341982. Its totient is φ = 142232341980.

The previous prime is 142232341973. The next prime is 142232342107. The reversal of 142232341981 is 189143232241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71431114756 + 70801227225 = 267266^2 + 266085^2 .

It is a cyclic number.

It is not a de Polignac number, because 142232341981 - 2³ = 142232341973 is a prime.

It is a super-2 number, since 2×142232341981² (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 (142232341921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71116170990 + 71116170991.

It is an arithmetic number, because the mean of its divisors is an integer number (71116170991).

Almost surely, 2^142232341981 is an apocalyptic number.

It is an amenable number.

142232341981 is a deficient number, since it is larger than the sum of its proper divisors (1).

142232341981 is an equidigital number, since it uses as much as digits as its factorization.

142232341981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 40.

The spelling of 142232341981 in words is "one hundred forty-two billion, two hundred thirty-two million, three hundred forty-one thousand, nine hundred eighty-one".