42427243 has 2 divisors, whose sum is σ = 42427244. Its totient is φ = 42427242.

The previous prime is 42427241. The next prime is 42427321. The reversal of 42427243 is 34272424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42427243 - 2¹ = 42427241 is a prime.

Together with 42427241, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42427241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21213621 + 21213622.

It is an arithmetic number, because the mean of its divisors is an integer number (21213622).

Almost surely, 2^42427243 is an apocalyptic number.

42427243 is a deficient number, since it is larger than the sum of its proper divisors (1).

42427243 is an equidigital number, since it uses as much as digits as its factorization.

42427243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 28.

The square root of 42427243 is about 6513.6198077567. The cubic root of 42427243 is about 348.7773474955. Note that the first 3 decimals are identical.

Adding to 42427243 its reverse (34272424), we get a palindrome (76699667).

The spelling of 42427243 in words is "forty-two million, four hundred twenty-seven thousand, two hundred forty-three".