123224355 has 16 divisors (see below), whose sum is σ = 219065760. Its totient is φ = 65719584.

The previous prime is 123224351. The next prime is 123224371. The reversal of 123224355 is 553422321.

It is a happy number.

It is not a de Polignac number, because 123224355 - 2² = 123224351 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (123224351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 456252 + ... + 456521.

It is an arithmetic number, because the mean of its divisors is an integer number (13691610).

Almost surely, 2^123224355 is an apocalyptic number.

123224355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123224355 is a deficient number, since it is larger than the sum of its proper divisors (95841405).

123224355 is an equidigital number, since it uses as much as digits as its factorization.

123224355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912787 (or 912781 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 123224355 is about 11100.6466027885. The cubic root of 123224355 is about 497.6211736522.

Adding to 123224355 its reverse (553422321), we get a palindrome (676646676).

The spelling of 123224355 in words is "one hundred twenty-three million, two hundred twenty-four thousand, three hundred fifty-five".