123321045 has 8 divisors (see below), whose sum is σ = 197313696. Its totient is φ = 65771216.

The previous prime is 123321041. The next prime is 123321049. The reversal of 123321045 is 540123321.

It is an interprime number because it is at equal distance from previous prime (123321041) and next prime (123321049).

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

It is a cyclic number.

It is not a de Polignac number, because 123321045 - 2² = 123321041 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123321041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4110687 + ... + 4110716.

It is an arithmetic number, because the mean of its divisors is an integer number (24664212).

Almost surely, 2^123321045 is an apocalyptic number.

123321045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123321045 is a deficient number, since it is larger than the sum of its proper divisors (73992651).

123321045 is an equidigital number, since it uses as much as digits as its factorization.

123321045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8221411.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 123321045 is about 11105.0009004952. Note that the first 3 decimals coincide. The cubic root of 123321045 is about 497.7512951476.

Adding to 123321045 its reverse (540123321), we get a palindrome (663444366).

The spelling of 123321045 in words is "one hundred twenty-three million, three hundred twenty-one thousand, forty-five".