43421207305 has 16 divisors (see below), whose sum is σ = 63051972480. Its totient is φ = 28023098112.

The previous prime is 43421207299. The next prime is 43421207321. The reversal of 43421207305 is 50370212434.

It is a happy number.

It is not a de Polignac number, because 43421207305 - 2⁹ = 43421206793 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36487815 + ... + 36489004.

It is an arithmetic number, because the mean of its divisors is an integer number (3940748280).

Almost surely, 2^43421207305 is an apocalyptic number.

It is an amenable number.

43421207305 is a deficient number, since it is larger than the sum of its proper divisors (19630765175).

43421207305 is a wasteful number, since it uses less digits than its factorization.

43421207305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72976848.

The product of its (nonzero) digits is 20160, while the sum is 31.

Adding to 43421207305 its reverse (50370212434), we get a palindrome (93791419739).

The spelling of 43421207305 in words is "forty-three billion, four hundred twenty-one million, two hundred seven thousand, three hundred five".