42221130 has 64 divisors (see below), whose sum is σ = 116951040. Its totient is φ = 9555264.

The previous prime is 42221119. The next prime is 42221143. The reversal of 42221130 is 3112224.

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

It is an unprimeable number.

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, 21531 + ... + 23409.

It is an arithmetic number, because the mean of its divisors is an integer number (1827360).

Almost surely, 2^42221130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42221130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58475520).

42221130 is an abundant number, since it is smaller than the sum of its proper divisors (74729910).

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

42221130 is a wasteful number, since it uses less digits than its factorization.

42221130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 42221130 is about 6497.7788512691. The cubic root of 42221130 is about 348.2116396606.

Adding to 42221130 its reverse (3112224), we get a palindrome (45333354).

The spelling of 42221130 in words is "forty-two million, two hundred twenty-one thousand, one hundred thirty".