40103443 has 4 divisors (see below), whose sum is σ = 40176000. Its totient is φ = 40030888.

The previous prime is 40103431. The next prime is 40103447. The reversal of 40103443 is 34430104.

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 40103443 - 2⁵ = 40103411 is a prime.

It is a super-2 number, since 2×40103443² = 3216572280908498, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40103443.

It is not an unprimeable number, because it can be changed into a prime (40103447) 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, 35443 + ... + 36556.

It is an arithmetic number, because the mean of its divisors is an integer number (10044000).

Almost surely, 2^40103443 is an apocalyptic number.

40103443 is a deficient number, since it is larger than the sum of its proper divisors (72557).

40103443 is an equidigital number, since it uses as much as digits as its factorization.

40103443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72556.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 40103443 is about 6332.7279272048. The cubic root of 40103443 is about 342.2897439707.

Adding to 40103443 its reverse (34430104), we get a palindrome (74533547).

The spelling of 40103443 in words is "forty million, one hundred three thousand, four hundred forty-three".