42231233 has 4 divisors (see below), whose sum is σ = 46070448. Its totient is φ = 38392020.

The previous prime is 42231229. The next prime is 42231257. The reversal of 42231233 is 33213224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42231233 - 2² = 42231229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42231223) 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, 1919591 + ... + 1919612.

It is an arithmetic number, because the mean of its divisors is an integer number (11517612).

Almost surely, 2^42231233 is an apocalyptic number.

It is an amenable number.

42231233 is a deficient number, since it is larger than the sum of its proper divisors (3839215).

42231233 is a wasteful number, since it uses less digits than its factorization.

42231233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3839214.

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

The square root of 42231233 is about 6498.5562242701. The cubic root of 42231233 is about 348.2394117076.

Adding to 42231233 its reverse (33213224), we get a palindrome (75444457).

Subtracting from 42231233 its reverse (33213224), we obtain a square (9018009 = 3003²).

The spelling of 42231233 in words is "forty-two million, two hundred thirty-one thousand, two hundred thirty-three".