42010644 has 48 divisors (see below), whose sum is σ = 106178688. Its totient is φ = 12851328.

The previous prime is 42010637. The next prime is 42010649. The reversal of 42010644 is 44601024.

It is a self number, because there is not a number n which added to its sum of digits gives 42010644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42010649) 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, 30049 + ... + 31415.

It is an arithmetic number, because the mean of its divisors is an integer number (2212056).

Almost surely, 2^42010644 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 42010644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53089344).

42010644 is an abundant number, since it is smaller than the sum of its proper divisors (64168044).

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

42010644 is a wasteful number, since it uses less digits than its factorization.

42010644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584 (or 1582 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 42010644 is about 6481.5618488139. The cubic root of 42010644 is about 347.6320261573.

Adding to 42010644 its reverse (44601024), we get a palindrome (86611668).

The spelling of 42010644 in words is "forty-two million, ten thousand, six hundred forty-four".