42225000 has 96 divisors (see below), whose sum is σ = 132179040. Its totient is φ = 11240000.

The previous prime is 42224999. The next prime is 42225013. The reversal of 42225000 is 52224.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74719 + ... + 75281.

It is an arithmetic number, because the mean of its divisors is an integer number (1376865).

Almost surely, 2^42225000 is an apocalyptic number.

42225000 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 42225000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66089520).

42225000 is an abundant number, since it is smaller than the sum of its proper divisors (89954040).

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

42225000 is an equidigital number, since it uses as much as digits as its factorization.

42225000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597 (or 573 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 42225000 is about 6498.0766385139. The cubic root of 42225000 is about 348.2222783927. Note that the first 4 decimals are identical.

Adding to 42225000 its reverse (52224), we get a palindrome (42277224).

The spelling of 42225000 in words is "forty-two million, two hundred twenty-five thousand".