123220427 has 8 divisors (see below), whose sum is σ = 136626672. Its totient is φ = 110181600.

The previous prime is 123220421. The next prime is 123220459. The reversal of 123220427 is 724022321.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123220427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123220421) 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, 91148 + ... + 92489.

It is an arithmetic number, because the mean of its divisors is an integer number (17078334).

Almost surely, 2^123220427 is an apocalyptic number.

123220427 is a deficient number, since it is larger than the sum of its proper divisors (13406245).

123220427 is a wasteful number, since it uses less digits than its factorization.

123220427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183709.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 123220427 is about 11100.4696747480. The cubic root of 123220427 is about 497.6158860699.

Adding to 123220427 its reverse (724022321), we get a palindrome (847242748).

The spelling of 123220427 in words is "one hundred twenty-three million, two hundred twenty thousand, four hundred twenty-seven".