142399459 has 2 divisors, whose sum is σ = 142399460. Its totient is φ = 142399458.

The previous prime is 142399451. The next prime is 142399501. The reversal of 142399459 is 954993241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142399459 - 2³ = 142399451 is a prime.

It is not a weakly prime, because it can be changed into another prime (142399451) 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, 71199729 + 71199730.

It is an arithmetic number, because the mean of its divisors is an integer number (71199730).

Almost surely, 2^142399459 is an apocalyptic number.

142399459 is a deficient number, since it is larger than the sum of its proper divisors (1).

142399459 is an equidigital number, since it uses as much as digits as its factorization.

142399459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 46.

The square root of 142399459 is about 11933.1244441680. The cubic root of 142399459 is about 522.1990929363.

The spelling of 142399459 in words is "one hundred forty-two million, three hundred ninety-nine thousand, four hundred fifty-nine".