42004942 has 16 divisors (see below), whose sum is σ = 72223200. Its totient is φ = 17948448.

The previous prime is 42004933. The next prime is 42004957. The reversal of 42004942 is 24940024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 588 + ... + 9184.

It is an arithmetic number, because the mean of its divisors is an integer number (4513950).

Almost surely, 2^42004942 is an apocalyptic number.

42004942 is a deficient number, since it is larger than the sum of its proper divisors (30218258).

42004942 is a wasteful number, since it uses less digits than its factorization.

42004942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8955.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 42004942 is about 6481.1219707702. The cubic root of 42004942 is about 347.6162977029.

Adding to 42004942 its reverse (24940024), we get a palindrome (66944966).

The spelling of 42004942 in words is "forty-two million, four thousand, nine hundred forty-two".