123121023 has 8 divisors (see below), whose sum is σ = 166944000. Its totient is φ = 80689368.

The previous prime is 123121013. The next prime is 123121049. The reversal of 123121023 is 320121321.

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

It is not a de Polignac number, because 123121023 - 2¹² = 123116927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123120993 and 123121011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123121003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347623 + ... + 347976.

It is an arithmetic number, because the mean of its divisors is an integer number (20868000).

Almost surely, 2^123121023 is an apocalyptic number.

123121023 is a deficient number, since it is larger than the sum of its proper divisors (43822977).

123121023 is an equidigital number, since it uses as much as digits as its factorization.

123121023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695661.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 123121023 is about 11095.9913031689. The cubic root of 123121023 is about 497.4820383573.

Adding to 123121023 its reverse (320121321), we get a palindrome (443242344).

The spelling of 123121023 in words is "one hundred twenty-three million, one hundred twenty-one thousand, twenty-three".