123267121 has 4 divisors (see below), whose sum is σ = 123331572. Its totient is φ = 123202672.

The previous prime is 123267061. The next prime is 123267181. The reversal of 123267121 is 121762321.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (123267061) and next prime (123267181).

It can be written as a sum of positive squares in 2 ways, for example, as 24364096 + 98903025 = 4936^2 + 9945^2 .

It is a cyclic number.

It is not a de Polignac number, because 123267121 - 2⁷ = 123266993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123267181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29266 + ... + 33211.

It is an arithmetic number, because the mean of its divisors is an integer number (30832893).

Almost surely, 2^123267121 is an apocalyptic number.

It is an amenable number.

123267121 is a deficient number, since it is larger than the sum of its proper divisors (64451).

123267121 is an equidigital number, since it uses as much as digits as its factorization.

123267121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64450.

The product of its digits is 1008, while the sum is 25.

The square root of 123267121 is about 11102.5727198699. The cubic root of 123267121 is about 497.6787347992.

The spelling of 123267121 in words is "one hundred twenty-three million, two hundred sixty-seven thousand, one hundred twenty-one".