4087442 has 4 divisors (see below), whose sum is σ = 6131166. Its totient is φ = 2043720.

The previous prime is 4087439. The next prime is 4087453. The reversal of 4087442 is 2447804.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2785561 + 1301881 = 1669^2 + 1141^2 .

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, 1021859 + ... + 1021862.

Almost surely, 2^4087442 is an apocalyptic number.

4087442 is a deficient number, since it is larger than the sum of its proper divisors (2043724).

4087442 is a wasteful number, since it uses less digits than its factorization.

4087442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043723.

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 4087442 is about 2021.7423179031. The cubic root of 4087442 is about 159.8884900109. Note that the first 3 decimals are identical.

The spelling of 4087442 in words is "four million, eighty-seven thousand, four hundred forty-two".