42210233 has 4 divisors (see below), whose sum is σ = 45457188. Its totient is φ = 38963280.

The previous prime is 42210227. The next prime is 42210239. The reversal of 42210233 is 33201224.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (42210227) and next prime (42210239).

It can be written as a sum of positive squares in 2 ways, for example, as 12475024 + 29735209 = 3532^2 + 5453^2 .

It is a cyclic number.

It is not a de Polignac number, because 42210233 - 2⁸ = 42209977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42210239) 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 3 ways as a sum of consecutive naturals, for example, 1623458 + ... + 1623483.

It is an arithmetic number, because the mean of its divisors is an integer number (11364297).

Almost surely, 2^42210233 is an apocalyptic number.

It is an amenable number.

42210233 is a deficient number, since it is larger than the sum of its proper divisors (3246955).

42210233 is a wasteful number, since it uses less digits than its factorization.

42210233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3246954.

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

The square root of 42210233 is about 6496.9402798548. The cubic root of 42210233 is about 348.1816800272.

Adding to 42210233 its reverse (33201224), we get a palindrome (75411457).

Subtracting from 42210233 its reverse (33201224), we obtain a palindrome (9009009).

The spelling of 42210233 in words is "forty-two million, two hundred ten thousand, two hundred thirty-three".