223740123 has 8 divisors (see below), whose sum is σ = 298920000. Its totient is φ = 148860168.

The previous prime is 223740119. The next prime is 223740169. The reversal of 223740123 is 321047322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 223740123 - 2² = 223740119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 223740093 and 223740102.

It is not an unprimeable number, because it can be changed into a prime (223747123) 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 in 7 ways as a sum of consecutive naturals, for example, 73233 + ... + 76226.

It is an arithmetic number, because the mean of its divisors is an integer number (37365000).

Almost surely, 2^223740123 is an apocalyptic number.

223740123 is a deficient number, since it is larger than the sum of its proper divisors (75179877).

223740123 is a wasteful number, since it uses less digits than its factorization.

223740123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149961.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 223740123 is about 14957.9451463094. The cubic root of 223740123 is about 607.0828405041.

Adding to 223740123 its reverse (321047322), we get a palindrome (544787445).

The spelling of 223740123 in words is "two hundred twenty-three million, seven hundred forty thousand, one hundred twenty-three".