42920444 has 48 divisors (see below), whose sum is σ = 93385152. Its totient is φ = 16837632.

The previous prime is 42920443. The next prime is 42920453. The reversal of 42920444 is 44402924.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42920443) 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, 16394 + ... + 18830.

It is an arithmetic number, because the mean of its divisors is an integer number (1945524).

Almost surely, 2^42920444 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 42920444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46692576).

42920444 is an abundant number, since it is smaller than the sum of its proper divisors (50464708).

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

42920444 is a wasteful number, since it uses less digits than its factorization.

42920444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502 (or 2500 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 42920444 is about 6551.3696277954. The cubic root of 42920444 is about 350.1236134797.

The spelling of 42920444 in words is "forty-two million, nine hundred twenty thousand, four hundred forty-four".