142299999 has 12 divisors (see below), whose sum is σ = 207025000. Its totient is φ = 94183344.

The previous prime is 142299991. The next prime is 142300003. The reversal of 142299999 is 999992241.

It is not a de Polignac number, because 142299999 - 2³ = 142299991 is a prime.

It is a Duffinian number.

142299999 is a modest number, since divided by 99999 gives 1422 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142299991) 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 in 11 ways as a sum of consecutive naturals, for example, 55624 + ... + 58125.

Almost surely, 2^142299999 is an apocalyptic number.

142299999 is a deficient number, since it is larger than the sum of its proper divisors (64725001).

142299999 is a wasteful number, since it uses less digits than its factorization.

142299999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113894 (or 113891 counting only the distinct ones).

The product of its digits is 944784, while the sum is 54.

The square root of 142299999 is about 11928.9563248425. The cubic root of 142299999 is about 522.0774866255.

The spelling of 142299999 in words is "one hundred forty-two million, two hundred ninety-nine thousand, nine hundred ninety-nine".