42506044 has 48 divisors (see below), whose sum is σ = 88482240. Its totient is φ = 17487360.

The previous prime is 42506041. The next prime is 42506063. The reversal of 42506044 is 44060524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42506041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91974 + ... + 92434.

It is an arithmetic number, because the mean of its divisors is an integer number (1843380).

Almost surely, 2^42506044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42506044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44241120).

42506044 is an abundant number, since it is smaller than the sum of its proper divisors (45976196).

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

42506044 is a wasteful number, since it uses less digits than its factorization.

42506044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598 (or 596 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 42506044 is about 6519.6659423624. The cubic root of 42506044 is about 348.9931444208.

Adding to 42506044 its reverse (44060524), we get a palindrome (86566568).

It can be divided in two parts, 425060 and 44, that added together give a square (425104 = 652²).

The spelling of 42506044 in words is "forty-two million, five hundred six thousand, forty-four".