42221110 has 16 divisors (see below), whose sum is σ = 76504032. Its totient is φ = 16776000.

The previous prime is 42221063. The next prime is 42221117. The reversal of 42221110 is 1112224.

It is a happy number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42221117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12471 + ... + 15490.

It is an arithmetic number, because the mean of its divisors is an integer number (4781502).

Almost surely, 2^42221110 is an apocalyptic number.

42221110 is a deficient number, since it is larger than the sum of its proper divisors (34282922).

42221110 is a wasteful number, since it uses less digits than its factorization.

42221110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28119.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 42221110 is about 6497.7773122815. Note that the first 3 decimals coincide. The cubic root of 42221110 is about 348.2115846783.

Adding to 42221110 its reverse (1112224), we get a palindrome (43333334).

The spelling of 42221110 in words is "forty-two million, two hundred twenty-one thousand, one hundred ten".