12423945 has 16 divisors (see below), whose sum is σ = 19922112. Its totient is φ = 6611520.

The previous prime is 12423941. The next prime is 12423973. The reversal of 12423945 is 54932421.

12423945 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12423945 - 2² = 12423941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12423941) 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, 12310 + ... + 13280.

It is an arithmetic number, because the mean of its divisors is an integer number (1245132).

Almost surely, 2^12423945 is an apocalyptic number.

12423945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12423945 is a deficient number, since it is larger than the sum of its proper divisors (7498167).

12423945 is an equidigital number, since it uses as much as digits as its factorization.

12423945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832.

The product of its digits is 8640, while the sum is 30.

The square root of 12423945 is about 3524.7616940724. The cubic root of 12423945 is about 231.6077957709.

The spelling of 12423945 in words is "twelve million, four hundred twenty-three thousand, nine hundred forty-five".