42302231 has 4 divisors (see below), whose sum is σ = 42315264. Its totient is φ = 42289200.

The previous prime is 42302207. The next prime is 42302243. The reversal of 42302231 is 13220324.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42302231 - 2¹⁴ = 42285847 is a prime.

It is a super-2 number, since 2×42302231² = 3578957495154722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42302251) 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, 2666 + ... + 9576.

It is an arithmetic number, because the mean of its divisors is an integer number (10578816).

Almost surely, 2^42302231 is an apocalyptic number.

42302231 is a deficient number, since it is larger than the sum of its proper divisors (13033).

42302231 is an equidigital number, since it uses as much as digits as its factorization.

42302231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13032.

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

The square root of 42302231 is about 6504.0165282693. The cubic root of 42302231 is about 348.4344526576.

Adding to 42302231 its reverse (13220324), we get a palindrome (55522555).

The spelling of 42302231 in words is "forty-two million, three hundred two thousand, two hundred thirty-one".