142399768 has 16 divisors (see below), whose sum is σ = 305142480. Its totient is φ = 61028448.

The previous prime is 142399727. The next prime is 142399793. The reversal of 142399768 is 867993241.

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 in 3 ways as a sum of consecutive naturals, for example, 1271371 + ... + 1271482.

It is an arithmetic number, because the mean of its divisors is an integer number (19071405).

Almost surely, 2^142399768 is an apocalyptic number.

It is an amenable number.

142399768 is an abundant number, since it is smaller than the sum of its proper divisors (162742712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142399768 is a wasteful number, since it uses less digits than its factorization.

142399768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542866 (or 2542862 counting only the distinct ones).

The product of its digits is 653184, while the sum is 49.

The square root of 142399768 is about 11933.1373913150. The cubic root of 142399768 is about 522.1994706517.

The spelling of 142399768 in words is "one hundred forty-two million, three hundred ninety-nine thousand, seven hundred sixty-eight".