220042123 has 16 divisors (see below), whose sum is σ = 260997120. Its totient is φ = 181533600.

The previous prime is 220042117. The next prime is 220042133. The reversal of 220042123 is 321240022.

It is a cyclic number.

It is not a de Polignac number, because 220042123 - 2⁵ = 220042091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220042097 and 220042106.

It is not an unprimeable number, because it can be changed into a prime (220042103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38793 + ... + 44101.

It is an arithmetic number, because the mean of its divisors is an integer number (16312320).

Almost surely, 2^220042123 is an apocalyptic number.

220042123 is a deficient number, since it is larger than the sum of its proper divisors (40954997).

220042123 is a wasteful number, since it uses less digits than its factorization.

220042123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5538.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 220042123 is about 14833.8168722686. The cubic root of 220042123 is about 603.7195997936.

Adding to 220042123 its reverse (321240022), we get a palindrome (541282145).

The spelling of 220042123 in words is "two hundred twenty million, forty-two thousand, one hundred twenty-three".