123320455 has 8 divisors (see below), whose sum is σ = 148840992. Its totient is φ = 98085408.

The previous prime is 123320381. The next prime is 123320459. The reversal of 123320455 is 554023321.

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 123320455 - 2¹¹ = 123318407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123320459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70419 + ... + 72148.

It is an arithmetic number, because the mean of its divisors is an integer number (18605124).

Almost surely, 2^123320455 is an apocalyptic number.

123320455 is a deficient number, since it is larger than the sum of its proper divisors (25520537).

123320455 is a wasteful number, since it uses less digits than its factorization.

123320455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142745.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 123320455 is about 11104.9743358551. The cubic root of 123320455 is about 497.7505013557.

Adding to 123320455 its reverse (554023321), we get a palindrome (677343776).

The spelling of 123320455 in words is "one hundred twenty-three million, three hundred twenty thousand, four hundred fifty-five".