142022239 has 2 divisors, whose sum is σ = 142022240. Its totient is φ = 142022238.

The previous prime is 142022227. The next prime is 142022269. The reversal of 142022239 is 932220241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142022239 - 2⁹ = 142021727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142022269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71011119 + 71011120.

It is an arithmetic number, because the mean of its divisors is an integer number (71011120).

Almost surely, 2^142022239 is an apocalyptic number.

142022239 is a deficient number, since it is larger than the sum of its proper divisors (1).

142022239 is an equidigital number, since it uses as much as digits as its factorization.

142022239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 142022239 is about 11917.3083789923. The cubic root of 142022239 is about 521.7375786903.

The spelling of 142022239 in words is "one hundred forty-two million, twenty-two thousand, two hundred thirty-nine".