43242015251 has 2 divisors, whose sum is σ = 43242015252. Its totient is φ = 43242015250.

The previous prime is 43242015239. The next prime is 43242015253. The reversal of 43242015251 is 15251024234.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43242015251 - 2³⁴ = 26062146067 is a prime.

Together with 43242015253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43242015253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21621007625 + 21621007626.

It is an arithmetic number, because the mean of its divisors is an integer number (21621007626).

Almost surely, 2^43242015251 is an apocalyptic number.

43242015251 is a deficient number, since it is larger than the sum of its proper divisors (1).

43242015251 is an equidigital number, since it uses as much as digits as its factorization.

43242015251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 43242015251 its reverse (15251024234), we get a palindrome (58493039485).

The spelling of 43242015251 in words is "forty-three billion, two hundred forty-two million, fifteen thousand, two hundred fifty-one".