123122555 has 4 divisors (see below), whose sum is σ = 147747072. Its totient is φ = 98498040.

The previous prime is 123122533. The next prime is 123122567. The reversal of 123122555 is 555221321.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 123122555 - 2¹² = 123118459 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12312251 + ... + 12312260.

It is an arithmetic number, because the mean of its divisors is an integer number (36936768).

Almost surely, 2^123122555 is an apocalyptic number.

123122555 is a deficient number, since it is larger than the sum of its proper divisors (24624517).

123122555 is an equidigital number, since it uses as much as digits as its factorization.

123122555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24624516.

The product of its digits is 3000, while the sum is 26.

The square root of 123122555 is about 11096.0603368944. The cubic root of 123122555 is about 497.4841017453.

Adding to 123122555 its reverse (555221321), we get a palindrome (678343876).

The spelling of 123122555 in words is "one hundred twenty-three million, one hundred twenty-two thousand, five hundred fifty-five".