43621234 has 4 divisors (see below), whose sum is σ = 65431854. Its totient is φ = 21810616.

The previous prime is 43621219. The next prime is 43621243. The reversal of 43621234 is 43212634.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28058209 + 15563025 = 5297^2 + 3945^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43621199 and 43621208.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10905307 + ... + 10905310.

Almost surely, 2^43621234 is an apocalyptic number.

43621234 is a deficient number, since it is larger than the sum of its proper divisors (21810620).

43621234 is a wasteful number, since it uses less digits than its factorization.

43621234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21810619.

The product of its digits is 3456, while the sum is 25.

The square root of 43621234 is about 6604.6373102541. The cubic root of 43621234 is about 352.0189007155.

Adding to 43621234 its reverse (43212634), we get a palindrome (86833868).

The spelling of 43621234 in words is "forty-three million, six hundred twenty-one thousand, two hundred thirty-four".