42044742 has 48 divisors (see below), whose sum is σ = 94848000. Its totient is φ = 13446000.

The previous prime is 42044731. The next prime is 42044749. The reversal of 42044742 is 24744024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42044749) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84009 + ... + 84507.

It is an arithmetic number, because the mean of its divisors is an integer number (1976000).

Almost surely, 2^42044742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42044742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47424000).

42044742 is an abundant number, since it is smaller than the sum of its proper divisors (52803258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42044742 is a wasteful number, since it uses less digits than its factorization.

42044742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689 (or 686 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 27.

The square root of 42044742 is about 6484.1916998189. The cubic root of 42044742 is about 347.7260527353.

Adding to 42044742 its reverse (24744024), we get a palindrome (66788766).

The spelling of 42044742 in words is "forty-two million, forty-four thousand, seven hundred forty-two".