42809850 has 96 divisors (see below), whose sum is σ = 124248000. Its totient is φ = 10808640.

The previous prime is 42809821. The next prime is 42809857. The reversal of 42809850 is 5890824.

It is not an unprimeable number, because it can be changed into a prime (42809857) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24816 + ... + 26484.

It is an arithmetic number, because the mean of its divisors is an integer number (1294250).

Almost surely, 2^42809850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42809850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62124000).

42809850 is an abundant number, since it is smaller than the sum of its proper divisors (81438150).

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

42809850 is a wasteful number, since it uses less digits than its factorization.

42809850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709 (or 1698 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 42809850 is about 6542.9236584267. The cubic root of 42809850 is about 349.8226312188.

The spelling of 42809850 in words is "forty-two million, eight hundred nine thousand, eight hundred fifty".