42453223 has 4 divisors (see below), whose sum is σ = 43034848. Its totient is φ = 41871600.

The previous prime is 42453221. The next prime is 42453227. The reversal of 42453223 is 32235424.

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

It is a cyclic number.

It is not a de Polignac number, because 42453223 - 2¹ = 42453221 is a prime.

It is a super-2 number, since 2×42453223² = 3604552286175458, 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 (42453221) 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, 290703 + ... + 290848.

It is an arithmetic number, because the mean of its divisors is an integer number (10758712).

Almost surely, 2^42453223 is an apocalyptic number.

42453223 is a deficient number, since it is larger than the sum of its proper divisors (581625).

42453223 is an equidigital number, since it uses as much as digits as its factorization.

42453223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581624.

The product of its digits is 5760, while the sum is 25.

The square root of 42453223 is about 6515.6137853621. The cubic root of 42453223 is about 348.8485233561.

Adding to 42453223 its reverse (32235424), we get a palindrome (74688647).

The spelling of 42453223 in words is "forty-two million, four hundred fifty-three thousand, two hundred twenty-three".