142239105289 has 2 divisors, whose sum is σ = 142239105290. Its totient is φ = 142239105288.

The previous prime is 142239105269. The next prime is 142239105329. The reversal of 142239105289 is 982501932241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140115462400 + 2123642889 = 374320^2 + 46083^2 .

It is a cyclic number.

It is not a de Polignac number, because 142239105289 - 2²⁵ = 142205550857 is a prime.

It is a super-3 number, since 3×142239105289³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (142239105269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71119552644 + 71119552645.

It is an arithmetic number, because the mean of its divisors is an integer number (71119552645).

Almost surely, 2^142239105289 is an apocalyptic number.

It is an amenable number.

142239105289 is a deficient number, since it is larger than the sum of its proper divisors (1).

142239105289 is an equidigital number, since it uses as much as digits as its factorization.

142239105289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 142239105289 in words is "one hundred forty-two billion, two hundred thirty-nine million, one hundred five thousand, two hundred eighty-nine".