142637999 has 8 divisors (see below), whose sum is σ = 166091040. Its totient is φ = 119954016.

The previous prime is 142637993. The next prime is 142638011. The reversal of 142637999 is 999736241.

142637999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142637999 - 2¹² = 142633903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142637993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191864 + ... + 192605.

It is an arithmetic number, because the mean of its divisors is an integer number (20761380).

Almost surely, 2^142637999 is an apocalyptic number.

142637999 is a deficient number, since it is larger than the sum of its proper divisors (23453041).

142637999 is an equidigital number, since it uses as much as digits as its factorization.

142637999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384529.

The product of its digits is 734832, while the sum is 50.

The square root of 142637999 is about 11943.1151296469. The cubic root of 142637999 is about 522.4905169864.

The spelling of 142637999 in words is "one hundred forty-two million, six hundred thirty-seven thousand, nine hundred ninety-nine".