42337840 has 40 divisors (see below), whose sum is σ = 99056160. Its totient is φ = 16828416.

The previous prime is 42337819. The next prime is 42337849. The reversal of 42337840 is 4873324.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (42337849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11776 + ... + 14944.

It is an arithmetic number, because the mean of its divisors is an integer number (2476404).

Almost surely, 2^42337840 is an apocalyptic number.

42337840 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 42337840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49528080).

42337840 is an abundant number, since it is smaller than the sum of its proper divisors (56718320).

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

42337840 is a wasteful number, since it uses less digits than its factorization.

42337840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349 (or 3343 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 42337840 is about 6506.7534147223. The cubic root of 42337840 is about 348.5321931497.

The spelling of 42337840 in words is "forty-two million, three hundred thirty-seven thousand, eight hundred forty".