142199744 has 14 divisors (see below), whose sum is σ = 282177744. Its totient is φ = 71099840.

The previous prime is 142199737. The next prime is 142199773. The reversal of 142199744 is 447991241.

It is a congruent number.

It is an unprimeable number.

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, 1110872 + ... + 1110999.

Almost surely, 2^142199744 is an apocalyptic number.

It is an amenable number.

142199744 is a deficient number, since it is larger than the sum of its proper divisors (139978000).

142199744 is an equidigital number, since it uses as much as digits as its factorization.

142199744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221883 (or 2221873 counting only the distinct ones).

The product of its digits is 72576, while the sum is 41.

The square root of 142199744 is about 11924.7534146413. The cubic root of 142199744 is about 521.9548509367.

The spelling of 142199744 in words is "one hundred forty-two million, one hundred ninety-nine thousand, seven hundred forty-four".