223420123 has 4 divisors (see below), whose sum is σ = 224289720. Its totient is φ = 222550528.

The previous prime is 223420117. The next prime is 223420129. The reversal of 223420123 is 321024322.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (223420117) and next prime (223420129).

It is a cyclic number.

It is not a de Polignac number, because 223420123 - 2¹³ = 223411931 is a prime.

It is a super-2 number, since 2×223420123² = 99833102722670258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 223420123.

It is not an unprimeable number, because it can be changed into a prime (223420129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434413 + ... + 434926.

It is an arithmetic number, because the mean of its divisors is an integer number (56072430).

Almost surely, 2^223420123 is an apocalyptic number.

223420123 is a deficient number, since it is larger than the sum of its proper divisors (869597).

223420123 is an equidigital number, since it uses as much as digits as its factorization.

223420123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869596.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 223420123 is about 14947.2446624788. The cubic root of 223420123 is about 606.7932795687.

Adding to 223420123 its reverse (321024322), we get a palindrome (544444445).

The spelling of 223420123 in words is "two hundred twenty-three million, four hundred twenty thousand, one hundred twenty-three".