142725392281 has 2 divisors, whose sum is σ = 142725392282. Its totient is φ = 142725392280.

The previous prime is 142725392263. The next prime is 142725392317. The reversal of 142725392281 is 182293527241.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76336716681 + 66388675600 = 276291^2 + 257660^2 .

It is a cyclic number.

It is not a de Polignac number, because 142725392281 - 2⁷ = 142725392153 is a prime.

It is a super-2 number, since 2×142725392281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142725392081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71362696140 + 71362696141.

It is an arithmetic number, because the mean of its divisors is an integer number (71362696141).

Almost surely, 2^142725392281 is an apocalyptic number.

It is an amenable number.

142725392281 is a deficient number, since it is larger than the sum of its proper divisors (1).

142725392281 is an equidigital number, since it uses as much as digits as its factorization.

142725392281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 46.

The spelling of 142725392281 in words is "one hundred forty-two billion, seven hundred twenty-five million, three hundred ninety-two thousand, two hundred eighty-one".