43242071 has 2 divisors, whose sum is σ = 43242072. Its totient is φ = 43242070.

The previous prime is 43242041. The next prime is 43242077. The reversal of 43242071 is 17024234.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43242071 is a prime.

It is equal to p_2618312 and since 43242071 and 2618312 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43242077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21621035 + 21621036.

It is an arithmetic number, because the mean of its divisors is an integer number (21621036).

Almost surely, 2^43242071 is an apocalyptic number.

43242071 is a deficient number, since it is larger than the sum of its proper divisors (1).

43242071 is an equidigital number, since it uses as much as digits as its factorization.

43242071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 43242071 is about 6575.8703606443. The cubic root of 43242071 is about 350.9959956578.

The spelling of 43242071 in words is "forty-three million, two hundred forty-two thousand, seventy-one".