43067421 has 12 divisors (see below), whose sum is σ = 62506080. Its totient is φ = 28574280.

The previous prime is 43067419. The next prime is 43067441. The reversal of 43067421 is 12476034.

43067421 is nontrivially palindromic in base 14.

It is not a de Polignac number, because 43067421 - 2¹ = 43067419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43067441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9441 + ... + 13238.

It is an arithmetic number, because the mean of its divisors is an integer number (5208840).

Almost surely, 2^43067421 is an apocalyptic number.

It is an amenable number.

43067421 is a deficient number, since it is larger than the sum of its proper divisors (19438659).

43067421 is a wasteful number, since it uses less digits than its factorization.

43067421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22896 (or 22893 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 43067421 is about 6562.5773138303. The cubic root of 43067421 is about 350.5228132157.

The spelling of 43067421 in words is "forty-three million, sixty-seven thousand, four hundred twenty-one".