42221330 has 16 divisors (see below), whose sum is σ = 79303104. Its totient is φ = 16154160.

The previous prime is 42221321. The next prime is 42221339. The reversal of 42221330 is 3312224.

It is an interprime number because it is at equal distance from previous prime (42221321) and next prime (42221339).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42221299 and 42221308.

It is not an unprimeable number, because it can be changed into a prime (42221339) 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 7 ways as a sum of consecutive naturals, for example, 91556 + ... + 92015.

It is an arithmetic number, because the mean of its divisors is an integer number (4956444).

Almost surely, 2^42221330 is an apocalyptic number.

42221330 is a deficient number, since it is larger than the sum of its proper divisors (37081774).

42221330 is a wasteful number, since it uses less digits than its factorization.

42221330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183601.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 42221330 is about 6497.7942411252. The cubic root of 42221330 is about 348.2121894818.

Adding to 42221330 its reverse (3312224), we get a palindrome (45533554).

The spelling of 42221330 in words is "forty-two million, two hundred twenty-one thousand, three hundred thirty".