43242769 has 2 divisors, whose sum is σ = 43242770. Its totient is φ = 43242768.

The previous prime is 43242743. The next prime is 43242851. The reversal of 43242769 is 96724234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23882769 + 19360000 = 4887^2 + 4400^2 .

It is a cyclic number.

It is not a de Polignac number, because 43242769 - 2¹¹ = 43240721 is a prime.

It is a super-2 number, since 2×43242769² = 3739874141574722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43242709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21621384 + 21621385.

It is an arithmetic number, because the mean of its divisors is an integer number (21621385).

Almost surely, 2^43242769 is an apocalyptic number.

It is an amenable number.

43242769 is a deficient number, since it is larger than the sum of its proper divisors (1).

43242769 is an equidigital number, since it uses as much as digits as its factorization.

43242769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 37.

The square root of 43242769 is about 6575.9234332525. The cubic root of 43242769 is about 350.9978842036.

The spelling of 43242769 in words is "forty-three million, two hundred forty-two thousand, seven hundred sixty-nine".