40243003 has 4 divisors (see below), whose sum is σ = 40256440. Its totient is φ = 40229568.

The previous prime is 40243001. The next prime is 40243019. The reversal of 40243003 is 30034204.

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 40243003 - 2¹ = 40243001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40243001) 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, 43 + ... + 8971.

It is an arithmetic number, because the mean of its divisors is an integer number (10064110).

Almost surely, 2^40243003 is an apocalyptic number.

40243003 is a deficient number, since it is larger than the sum of its proper divisors (13437).

40243003 is an equidigital number, since it uses as much as digits as its factorization.

40243003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13436.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 40243003 is about 6343.7373054060. The cubic root of 40243003 is about 342.6863404291.

Adding to 40243003 its reverse (30034204), we get a palindrome (70277207).

The spelling of 40243003 in words is "forty million, two hundred forty-three thousand, three".