43545242 has 8 divisors (see below), whose sum is σ = 70342356. Its totient is φ = 20097792.

The previous prime is 43545221. The next prime is 43545247. The reversal of 43545242 is 24254534.

It can be written as a sum of positive squares in 2 ways, for example, as 43414921 + 130321 = 6589^2 + 361^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (43545247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 837383 + ... + 837434.

Almost surely, 2^43545242 is an apocalyptic number.

43545242 is a deficient number, since it is larger than the sum of its proper divisors (26797114).

43545242 is a wasteful number, since it uses less digits than its factorization.

43545242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674832.

The product of its digits is 19200, while the sum is 29.

The square root of 43545242 is about 6598.8818749846. The cubic root of 43545242 is about 351.8143660056.

Adding to 43545242 its reverse (24254534), we get a palindrome (67799776).

The spelling of 43545242 in words is "forty-three million, five hundred forty-five thousand, two hundred forty-two".