220542041 has 2 divisors, whose sum is σ = 220542042. Its totient is φ = 220542040.

The previous prime is 220542019. The next prime is 220542043. The reversal of 220542041 is 140245022.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120121600 + 100420441 = 10960^2 + 10021^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220542041 is a prime.

Together with 220542043, 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 (220542043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110271020 + 110271021.

It is an arithmetic number, because the mean of its divisors is an integer number (110271021).

Almost surely, 2^220542041 is an apocalyptic number.

It is an amenable number.

220542041 is a deficient number, since it is larger than the sum of its proper divisors (1).

220542041 is an equidigital number, since it uses as much as digits as its factorization.

220542041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 220542041 is about 14850.6579315531. The cubic root of 220542041 is about 604.1764547750.

Adding to 220542041 its reverse (140245022), we get a palindrome (360787063).

The spelling of 220542041 in words is "two hundred twenty million, five hundred forty-two thousand, forty-one".