43421167 has 2 divisors, whose sum is σ = 43421168. Its totient is φ = 43421166.

The previous prime is 43421143. The next prime is 43421197. The reversal of 43421167 is 76112434.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43421167 - 2⁷ = 43421039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43421197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21710583 + 21710584.

It is an arithmetic number, because the mean of its divisors is an integer number (21710584).

Almost surely, 2^43421167 is an apocalyptic number.

43421167 is a deficient number, since it is larger than the sum of its proper divisors (1).

43421167 is an equidigital number, since it uses as much as digits as its factorization.

43421167 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 28.

The square root of 43421167 is about 6589.4739547251. The cubic root of 43421167 is about 351.4799024275.

The spelling of 43421167 in words is "forty-three million, four hundred twenty-one thousand, one hundred sixty-seven".