43142069 has 2 divisors, whose sum is σ = 43142070. Its totient is φ = 43142068.

The previous prime is 43142063. The next prime is 43142083. The reversal of 43142069 is 96024134.

43142069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42081169 + 1060900 = 6487^2 + 1030^2 .

It is a cyclic number.

It is not a de Polignac number, because 43142069 - 2¹⁶ = 43076533 is a prime.

It is a super-2 number, since 2×43142069² = 3722476235201522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43142063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21571034 + 21571035.

It is an arithmetic number, because the mean of its divisors is an integer number (21571035).

Almost surely, 2^43142069 is an apocalyptic number.

It is an amenable number.

43142069 is a deficient number, since it is larger than the sum of its proper divisors (1).

43142069 is an equidigital number, since it uses as much as digits as its factorization.

43142069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 43142069 is about 6568.2622511590. The cubic root of 43142069 is about 350.7252146544.

The spelling of 43142069 in words is "forty-three million, one hundred forty-two thousand, sixty-nine".