223542427 has 2 divisors, whose sum is σ = 223542428. Its totient is φ = 223542426.

The previous prime is 223542413. The next prime is 223542433. The reversal of 223542427 is 724245322.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223542427 is a prime.

It is not a weakly prime, because it can be changed into another prime (223543427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111771213 + 111771214.

It is an arithmetic number, because the mean of its divisors is an integer number (111771214).

Almost surely, 2^223542427 is an apocalyptic number.

223542427 is a deficient number, since it is larger than the sum of its proper divisors (1).

223542427 is an equidigital number, since it uses as much as digits as its factorization.

223542427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 31.

The square root of 223542427 is about 14951.3352915383. The cubic root of 223542427 is about 606.9039823805.

Adding to 223542427 its reverse (724245322), we get a palindrome (947787749).

The spelling of 223542427 in words is "two hundred twenty-three million, five hundred forty-two thousand, four hundred twenty-seven".