43240034 has 4 divisors (see below), whose sum is σ = 64860054. Its totient is φ = 21620016.

The previous prime is 43240003. The next prime is 43240037. The reversal of 43240034 is 43004234.

It is a happy number.

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., 43230625 + 9409 = 6575^2 + 97^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43239988 and 43240015.

It is not an unprimeable number, because it can be changed into a prime (43240037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10810007 + ... + 10810010.

Almost surely, 2^43240034 is an apocalyptic number.

43240034 is a deficient number, since it is larger than the sum of its proper divisors (21620020).

43240034 is a wasteful number, since it uses less digits than its factorization.

43240034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21620019.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 43240034 is about 6575.7154743800. The cubic root of 43240034 is about 350.9904841266.

Adding to 43240034 its reverse (43004234), we get a palindrome (86244268).

The spelling of 43240034 in words is "forty-three million, two hundred forty thousand, thirty-four".