142004388 has 24 divisors (see below), whose sum is σ = 334279008. Its totient is φ = 46915456.

The previous prime is 142004381. The next prime is 142004399. The reversal of 142004388 is 883400241.

It is a super-2 number, since 2×142004388² = 40330492422509088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142004381) 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, 51006 + ... + 53717.

It is an arithmetic number, because the mean of its divisors is an integer number (13928292).

Almost surely, 2^142004388 is an apocalyptic number.

It is an amenable number.

142004388 is an abundant number, since it is smaller than the sum of its proper divisors (192274620).

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

142004388 is a wasteful number, since it uses less digits than its factorization.

142004388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104843 (or 104841 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 142004388 is about 11916.5594027807. The cubic root of 142004388 is about 521.7157184337.

The spelling of 142004388 in words is "one hundred forty-two million, four thousand, three hundred eighty-eight".