43072019 has 2 divisors, whose sum is σ = 43072020. Its totient is φ = 43072018.

The previous prime is 43072013. The next prime is 43072049. The reversal of 43072019 is 91027034.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43072019 - 2¹² = 43067923 is a prime.

It is a super-2 number, since 2×43072019² = 3710397641472722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43072013) 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, 21536009 + 21536010.

It is an arithmetic number, because the mean of its divisors is an integer number (21536010).

Almost surely, 2^43072019 is an apocalyptic number.

43072019 is a deficient number, since it is larger than the sum of its proper divisors (1).

43072019 is an equidigital number, since it uses as much as digits as its factorization.

43072019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 43072019 is about 6562.9276241629. The cubic root of 43072019 is about 350.5352870416.

The spelling of 43072019 in words is "forty-three million, seventy-two thousand, nineteen".