142136459 has 2 divisors, whose sum is σ = 142136460. Its totient is φ = 142136458.

The previous prime is 142136443. The next prime is 142136479. The reversal of 142136459 is 954631241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142136459 - 2⁴ = 142136443 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142136419) 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, 71068229 + 71068230.

It is an arithmetic number, because the mean of its divisors is an integer number (71068230).

Almost surely, 2^142136459 is an apocalyptic number.

142136459 is a deficient number, since it is larger than the sum of its proper divisors (1).

142136459 is an equidigital number, since it uses as much as digits as its factorization.

142136459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 142136459 is about 11922.0996053548. The cubic root of 142136459 is about 521.8774086637.

The spelling of 142136459 in words is "one hundred forty-two million, one hundred thirty-six thousand, four hundred fifty-nine".