43140743 has 2 divisors, whose sum is σ = 43140744. Its totient is φ = 43140742.

The previous prime is 43140707. The next prime is 43140751. The reversal of 43140743 is 34704134.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43140743 - 2¹⁸ = 42878599 is a prime.

It is a super-2 number, since 2×43140743² = 3722247413184098, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43140793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21570371 + 21570372.

It is an arithmetic number, because the mean of its divisors is an integer number (21570372).

Almost surely, 2^43140743 is an apocalyptic number.

43140743 is a deficient number, since it is larger than the sum of its proper divisors (1).

43140743 is an equidigital number, since it uses as much as digits as its factorization.

43140743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 43140743 is about 6568.1613104430. The cubic root of 43140743 is about 350.7216213605.

Adding to 43140743 its reverse (34704134), we get a palindrome (77844877).

The spelling of 43140743 in words is "forty-three million, one hundred forty thousand, seven hundred forty-three".