142255531309 has 2 divisors, whose sum is σ = 142255531310. Its totient is φ = 142255531308.

The previous prime is 142255531273. The next prime is 142255531331. The reversal of 142255531309 is 903135552241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141342162025 + 913369284 = 375955^2 + 30222^2 .

It is a cyclic number.

It is not a de Polignac number, because 142255531309 - 2¹⁷ = 142255400237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142255538309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71127765654 + 71127765655.

It is an arithmetic number, because the mean of its divisors is an integer number (71127765655).

Almost surely, 2^142255531309 is an apocalyptic number.

It is an amenable number.

142255531309 is a deficient number, since it is larger than the sum of its proper divisors (1).

142255531309 is an equidigital number, since it uses as much as digits as its factorization.

142255531309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 142255531309 in words is "one hundred forty-two billion, two hundred fifty-five million, five hundred thirty-one thousand, three hundred nine".