12420023 has 16 divisors (see below), whose sum is σ = 16160256. Its totient is φ = 9255840.

The previous prime is 12420019. The next prime is 12420029. The reversal of 12420023 is 32002421.

It is not a de Polignac number, because 12420023 - 2² = 12420019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1736 + ... + 5277.

It is an arithmetic number, because the mean of its divisors is an integer number (1010016).

Almost surely, 2^12420023 is an apocalyptic number.

12420023 is a deficient number, since it is larger than the sum of its proper divisors (3740233).

12420023 is a wasteful number, since it uses less digits than its factorization.

12420023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7054.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 12420023 is about 3524.2053004897. The cubic root of 12420023 is about 231.5834218334.

Adding to 12420023 its reverse (32002421), we get a palindrome (44422444).

The spelling of 12420023 in words is "twelve million, four hundred twenty thousand, twenty-three".