4089142 has 8 divisors (see below), whose sum is σ = 6456600. Its totient is φ = 1936944.

The previous prime is 4089139. The next prime is 4089143. The reversal of 4089142 is 2419804.

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

It is an Ulam number.

It is a nialpdrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 4089142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4089143) by changing a digit.

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, 53767 + ... + 53842.

It is an arithmetic number, because the mean of its divisors is an integer number (807075).

Almost surely, 2^4089142 is an apocalyptic number.

4089142 is a deficient number, since it is larger than the sum of its proper divisors (2367458).

4089142 is a wasteful number, since it uses less digits than its factorization.

4089142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107630.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 4089142 is about 2022.1627036418. The cubic root of 4089142 is about 159.9106532415.

The spelling of 4089142 in words is "four million, eighty-nine thousand, one hundred forty-two".