43420319 has 2 divisors, whose sum is σ = 43420320. Its totient is φ = 43420318.

The previous prime is 43420291. The next prime is 43420331. The reversal of 43420319 is 91302434.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43420319 - 2⁸ = 43420063 is a prime.

It is a super-2 number, since 2×43420319² = 3770648204123522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43420379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21710159 + 21710160.

It is an arithmetic number, because the mean of its divisors is an integer number (21710160).

Almost surely, 2^43420319 is an apocalyptic number.

43420319 is a deficient number, since it is larger than the sum of its proper divisors (1).

43420319 is an equidigital number, since it uses as much as digits as its factorization.

43420319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 43420319 is about 6589.4096093656. The cubic root of 43420319 is about 351.4776143199.

The spelling of 43420319 in words is "forty-three million, four hundred twenty thousand, three hundred nineteen".