40223543 has 4 divisors (see below), whose sum is σ = 40708248. Its totient is φ = 39738840.

The previous prime is 40223539. The next prime is 40223549. The reversal of 40223543 is 34532204.

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 40223543 - 2² = 40223539 is a prime.

It is a super-2 number, since 2×40223543² = 3235866822945698, 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 (40223549) 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, 242228 + ... + 242393.

It is an arithmetic number, because the mean of its divisors is an integer number (10177062).

Almost surely, 2^40223543 is an apocalyptic number.

40223543 is a deficient number, since it is larger than the sum of its proper divisors (484705).

40223543 is an equidigital number, since it uses as much as digits as its factorization.

40223543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484704.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 40223543 is about 6342.2033237669. The cubic root of 40223543 is about 342.6310947890.

Adding to 40223543 its reverse (34532204), we get a palindrome (74755747).

The spelling of 40223543 in words is "forty million, two hundred twenty-three thousand, five hundred forty-three".