42004742 has 16 divisors (see below), whose sum is σ = 68393472. Its totient is φ = 19232640.

The previous prime is 42004741. The next prime is 42004751. The reversal of 42004742 is 24740024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42004741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3059 + ... + 9662.

It is an arithmetic number, because the mean of its divisors is an integer number (4274592).

Almost surely, 2^42004742 is an apocalyptic number.

42004742 is a deficient number, since it is larger than the sum of its proper divisors (26388730).

42004742 is a wasteful number, since it uses less digits than its factorization.

42004742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12863.

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 42004742 is about 6481.1065413246. The cubic root of 42004742 is about 347.6157459950.

Adding to 42004742 its reverse (24740024), we get a palindrome (66744766).

The spelling of 42004742 in words is "forty-two million, four thousand, seven hundred forty-two".