42889240 has 16 divisors (see below), whose sum is σ = 96500880. Its totient is φ = 17155680.

The previous prime is 42889219. The next prime is 42889247. The reversal of 42889240 is 4298824.

It is a self number, because there is not a number n which added to its sum of digits gives 42889240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42889247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536076 + ... + 536155.

It is an arithmetic number, because the mean of its divisors is an integer number (6031305).

Almost surely, 2^42889240 is an apocalyptic number.

42889240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42889240 is an abundant number, since it is smaller than the sum of its proper divisors (53611640).

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

42889240 is a wasteful number, since it uses less digits than its factorization.

42889240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072242 (or 1072238 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 42889240 is about 6548.9877080355. The cubic root of 42889240 is about 350.0387440103.

The spelling of 42889240 in words is "forty-two million, eight hundred eighty-nine thousand, two hundred forty".