220042523 has 2 divisors, whose sum is σ = 220042524. Its totient is φ = 220042522.

The previous prime is 220042519. The next prime is 220042547. The reversal of 220042523 is 325240022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220042523 - 2² = 220042519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220042495 and 220042504.

It is not a weakly prime, because it can be changed into another prime (220042573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110021261 + 110021262.

It is an arithmetic number, because the mean of its divisors is an integer number (110021262).

Almost surely, 2^220042523 is an apocalyptic number.

220042523 is a deficient number, since it is larger than the sum of its proper divisors (1).

220042523 is an equidigital number, since it uses as much as digits as its factorization.

220042523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 220042523 is about 14833.8303549690. The cubic root of 220042523 is about 603.7199656140.

Adding to 220042523 its reverse (325240022), we get a palindrome (545282545).

The spelling of 220042523 in words is "two hundred twenty million, forty-two thousand, five hundred twenty-three".