43242653 has 2 divisors, whose sum is σ = 43242654. Its totient is φ = 43242652.

The previous prime is 43242601. The next prime is 43242673. The reversal of 43242653 is 35624234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42797764 + 444889 = 6542^2 + 667^2 .

It is a cyclic number.

It is not a de Polignac number, because 43242653 - 2²⁰ = 42194077 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43242673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21621326 + 21621327.

It is an arithmetic number, because the mean of its divisors is an integer number (21621327).

Almost surely, 2^43242653 is an apocalyptic number.

It is an amenable number.

43242653 is a deficient number, since it is larger than the sum of its proper divisors (1).

43242653 is an equidigital number, since it uses as much as digits as its factorization.

43242653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 29.

The square root of 43242653 is about 6575.9146131926. The cubic root of 43242653 is about 350.9975703492.

Adding to 43242653 its reverse (35624234), we get a palindrome (78866887).

The spelling of 43242653 in words is "forty-three million, two hundred forty-two thousand, six hundred fifty-three".