43020743 has 2 divisors, whose sum is σ = 43020744. Its totient is φ = 43020742.

The previous prime is 43020739. The next prime is 43020781. The reversal of 43020743 is 34702034.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43020743 - 2² = 43020739 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43026743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21510371 + 21510372.

It is an arithmetic number, because the mean of its divisors is an integer number (21510372).

Almost surely, 2^43020743 is an apocalyptic number.

43020743 is a deficient number, since it is larger than the sum of its proper divisors (1).

43020743 is an equidigital number, since it uses as much as digits as its factorization.

43020743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 43020743 is about 6559.0199725264. The cubic root of 43020743 is about 350.3961310803.

Adding to 43020743 its reverse (34702034), we get a palindrome (77722777).

The spelling of 43020743 in words is "forty-three million, twenty thousand, seven hundred forty-three".