142239677 has 2 divisors, whose sum is σ = 142239678. Its totient is φ = 142239676.

The previous prime is 142239667. The next prime is 142239707. The reversal of 142239677 is 776932241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142229476 + 10201 = 11926^2 + 101^2 .

It is a cyclic number.

It is not a de Polignac number, because 142239677 - 2⁴ = 142239661 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142239607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71119838 + 71119839.

It is an arithmetic number, because the mean of its divisors is an integer number (71119839).

Almost surely, 2^142239677 is an apocalyptic number.

It is an amenable number.

142239677 is a deficient number, since it is larger than the sum of its proper divisors (1).

142239677 is an equidigital number, since it uses as much as digits as its factorization.

142239677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 41.

The square root of 142239677 is about 11926.4276713524. The cubic root of 142239677 is about 522.0037053900.

The spelling of 142239677 in words is "one hundred forty-two million, two hundred thirty-nine thousand, six hundred seventy-seven".