42003442 has 16 divisors (see below), whose sum is σ = 68042520. Its totient is φ = 19331712.

The previous prime is 42003421. The next prime is 42003463. The reversal of 42003442 is 24430024.

42003442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42003421) and next prime (42003463).

It can be written as a sum of positive squares in 4 ways, for example, as 9865881 + 32137561 = 3141^2 + 5669^2 .

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 in 7 ways as a sum of consecutive naturals, for example, 8038 + ... + 12190.

Almost surely, 2^42003442 is an apocalyptic number.

42003442 is a deficient number, since it is larger than the sum of its proper divisors (26039078).

42003442 is a wasteful number, since it uses less digits than its factorization.

42003442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4557.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 42003442 is about 6481.0062490326. The cubic root of 42003442 is about 347.6121598513.

Adding to 42003442 its reverse (24430024), we get a palindrome (66433466).

The spelling of 42003442 in words is "forty-two million, three thousand, four hundred forty-two".