12421123 has 8 divisors (see below), whose sum is σ = 14592816. Its totient is φ = 10423200.

The previous prime is 12421121. The next prime is 12421163. The reversal of 12421123 is 32112421.

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

It is a cyclic number.

It is not a de Polignac number, because 12421123 - 2¹ = 12421121 is a prime.

It is a super-2 number, since 2×12421123² = 308568593162258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12421097 and 12421106.

It is not an unprimeable number, because it can be changed into a prime (12421121) 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, 43288 + ... + 43573.

It is an arithmetic number, because the mean of its divisors is an integer number (1824102).

Almost surely, 2^12421123 is an apocalyptic number.

12421123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12421123 is a deficient number, since it is larger than the sum of its proper divisors (2171693).

12421123 is a wasteful number, since it uses less digits than its factorization.

12421123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86885.

The product of its digits is 96, while the sum is 16.

The square root of 12421123 is about 3524.3613605872. The cubic root of 12421123 is about 231.5902584886.

Adding to 12421123 its reverse (32112421), we get a palindrome (44533544).

It can be divided in two parts, 12421 and 123, that added together give a square (12544 = 112²).

The spelling of 12421123 in words is "twelve million, four hundred twenty-one thousand, one hundred twenty-three".