42634243 has 2 divisors, whose sum is σ = 42634244. Its totient is φ = 42634242.

The previous prime is 42634237. The next prime is 42634247. The reversal of 42634243 is 34243624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42634243 - 2⁵ = 42634211 is a prime.

It is not a weakly prime, because it can be changed into another prime (42634247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21317121 + 21317122.

It is an arithmetic number, because the mean of its divisors is an integer number (21317122).

Almost surely, 2^42634243 is an apocalyptic number.

42634243 is a deficient number, since it is larger than the sum of its proper divisors (1).

42634243 is an equidigital number, since it uses as much as digits as its factorization.

42634243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 28.

The square root of 42634243 is about 6529.4902557550. The cubic root of 42634243 is about 349.3436488328.

Adding to 42634243 its reverse (34243624), we get a palindrome (76877867).

The spelling of 42634243 in words is "forty-two million, six hundred thirty-four thousand, two hundred forty-three".