40741243 has 2 divisors, whose sum is σ = 40741244. Its totient is φ = 40741242.

The previous prime is 40741193. The next prime is 40741247. The reversal of 40741243 is 34214704.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40741243 is a prime.

It is not a weakly prime, because it can be changed into another prime (40741247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20370621 + 20370622.

It is an arithmetic number, because the mean of its divisors is an integer number (20370622).

Almost surely, 2^40741243 is an apocalyptic number.

40741243 is a deficient number, since it is larger than the sum of its proper divisors (1).

40741243 is an equidigital number, since it uses as much as digits as its factorization.

40741243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 40741243 is about 6382.8867293725. The cubic root of 40741243 is about 344.0947858282.

Adding to 40741243 its reverse (34214704), we get a palindrome (74955947).

The spelling of 40741243 in words is "forty million, seven hundred forty-one thousand, two hundred forty-three".