42312233 has 4 divisors (see below), whose sum is σ = 42731268. Its totient is φ = 41893200.

The previous prime is 42312217. The next prime is 42312239. The reversal of 42312233 is 33221324.

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

It can be written as a sum of positive squares in 2 ways, for example, as 41628304 + 683929 = 6452^2 + 827^2 .

It is a cyclic number.

It is not a de Polignac number, because 42312233 - 2⁴ = 42312217 is a prime.

It is a super-2 number, since 2×42312233² = 3580650122892578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42312239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209366 + ... + 209567.

It is an arithmetic number, because the mean of its divisors is an integer number (10682817).

Almost surely, 2^42312233 is an apocalyptic number.

It is an amenable number.

42312233 is a deficient number, since it is larger than the sum of its proper divisors (419035).

42312233 is a wasteful number, since it uses less digits than its factorization.

42312233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419034.

The product of its digits is 864, while the sum is 20.

The square root of 42312233 is about 6504.7853923093. The cubic root of 42312233 is about 348.4619119403.

Adding to 42312233 its reverse (33221324), we get a palindrome (75533557).

Subtracting from 42312233 its reverse (33221324), we obtain a palindrome (9090909).

The spelling of 42312233 in words is "forty-two million, three hundred twelve thousand, two hundred thirty-three".