39988142 has 8 divisors (see below), whose sum is σ = 60296832. Its totient is φ = 19889200.

The previous prime is 39988139. The next prime is 39988181. The reversal of 39988142 is 24188993.

It is a happy number.

39988142 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 a super-2 number, since 2×39988142² = 3198103001224328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 39988093 and 39988102.

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, 51959 + ... + 52722.

It is an arithmetic number, because the mean of its divisors is an integer number (7537104).

Almost surely, 2^39988142 is an apocalyptic number.

39988142 is a deficient number, since it is larger than the sum of its proper divisors (20308690).

39988142 is a wasteful number, since it uses less digits than its factorization.

39988142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104874.

The product of its digits is 124416, while the sum is 44.

The square root of 39988142 is about 6323.6177936368. The cubic root of 39988142 is about 341.9613911707.

The spelling of 39988142 in words is "thirty-nine million, nine hundred eighty-eight thousand, one hundred forty-two".