4003442 has 4 divisors (see below), whose sum is σ = 6005166. Its totient is φ = 2001720.

The previous prime is 4003427. The next prime is 4003453. The reversal of 4003442 is 2443004.

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., 2660161 + 1343281 = 1631^2 + 1159^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4003442.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000859 + ... + 1000862.

Almost surely, 2^4003442 is an apocalyptic number.

4003442 is a deficient number, since it is larger than the sum of its proper divisors (2001724).

4003442 is a wasteful number, since it uses less digits than its factorization.

4003442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001723.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 4003442 is about 2000.8603149645. The cubic root of 4003442 is about 158.7856240965.

Adding to 4003442 its reverse (2443004), we get a palindrome (6446446).

The spelling of 4003442 in words is "four million, three thousand, four hundred forty-two".