123550321 has 4 divisors (see below), whose sum is σ = 123676992. Its totient is φ = 123423652.

The previous prime is 123550313. The next prime is 123550351. The reversal of 123550321 is 123055321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123550321 - 2³ = 123550313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123550292 and 123550301.

It is not an unprimeable number, because it can be changed into a prime (123550351) 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, 61861 + ... + 63826.

It is an arithmetic number, because the mean of its divisors is an integer number (30919248).

Almost surely, 2^123550321 is an apocalyptic number.

It is an amenable number.

123550321 is a deficient number, since it is larger than the sum of its proper divisors (126671).

123550321 is an equidigital number, since it uses as much as digits as its factorization.

123550321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126670.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 123550321 is about 11115.3192036936. The cubic root of 123550321 is about 498.0595739014.

The spelling of 123550321 in words is "one hundred twenty-three million, five hundred fifty thousand, three hundred twenty-one".