42441440 has 96 divisors (see below), whose sum is σ = 110315520. Its totient is φ = 15358464.

The previous prime is 42441403. The next prime is 42441461. The reversal of 42441440 is 4414424.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69617 + ... + 70223.

It is an arithmetic number, because the mean of its divisors is an integer number (1149120).

Almost surely, 2^42441440 is an apocalyptic number.

42441440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42441440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55157760).

42441440 is an abundant number, since it is smaller than the sum of its proper divisors (67874080).

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

42441440 is a wasteful number, since it uses less digits than its factorization.

42441440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 656 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 42441440 is about 6514.7095100242. The cubic root of 42441440 is about 348.8162457714.

Adding to 42441440 its reverse (4414424), we get a palindrome (46855864).

The spelling of 42441440 in words is "forty-two million, four hundred forty-one thousand, four hundred forty".