40432243 has 4 divisors (see below), whose sum is σ = 40529160. Its totient is φ = 40335328.

The previous prime is 40432237. The next prime is 40432303. The reversal of 40432243 is 34223404.

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 40432243 - 2⁵ = 40432211 is a prime.

It is a super-2 number, since 2×40432243² = 3269532548022098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40432043) 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, 47830 + ... + 48667.

It is an arithmetic number, because the mean of its divisors is an integer number (10132290).

Almost surely, 2^40432243 is an apocalyptic number.

40432243 is a deficient number, since it is larger than the sum of its proper divisors (96917).

40432243 is an equidigital number, since it uses as much as digits as its factorization.

40432243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96916.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 40432243 is about 6358.6353095613. The cubic root of 40432243 is about 343.2226537599. Note that the first 3 decimals are identical.

Adding to 40432243 its reverse (34223404), we get a palindrome (74655647).

The spelling of 40432243 in words is "forty million, four hundred thirty-two thousand, two hundred forty-three".