42243500 has 96 divisors (see below), whose sum is σ = 101879232. Its totient is φ = 15206400.

The previous prime is 42243499. The next prime is 42243503. The reversal of 42243500 is 534224.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (42243503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 435452 + ... + 435548.

It is an arithmetic number, because the mean of its divisors is an integer number (1061242).

Almost surely, 2^42243500 is an apocalyptic number.

It is a pronic number, being equal to 6499×6500.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42243500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50939616).

42243500 is an abundant number, since it is smaller than the sum of its proper divisors (59635732).

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

42243500 is a wasteful number, since it uses less digits than its factorization.

42243500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 42243500 is about 6499.4999807678. The cubic root of 42243500 is about 348.2731264018.

Adding to 42243500 its reverse (534224), we get a palindrome (42777724).

The spelling of 42243500 in words is "forty-two million, two hundred forty-three thousand, five hundred".