12402423 has 16 divisors (see below), whose sum is σ = 20044800. Its totient is φ = 7516440.

The previous prime is 12402391. The next prime is 12402431. The reversal of 12402423 is 32420421.

12402423 is a `hidden beast` number, since 1 + 240 + 2 + 423 = 666.

It is not a de Polignac number, because 12402423 - 2⁵ = 12402391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12402396 and 12402405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12402023) 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, 20583 + ... + 21176.

It is an arithmetic number, because the mean of its divisors is an integer number (1252800).

Almost surely, 2^12402423 is an apocalyptic number.

12402423 is a deficient number, since it is larger than the sum of its proper divisors (7642377).

12402423 is a wasteful number, since it uses less digits than its factorization.

12402423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41779 (or 41773 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 12402423 is about 3521.7073984078. The cubic root of 12402423 is about 231.4739804097.

Adding to 12402423 its reverse (32420421), we get a palindrome (44822844).

It can be divided in two parts, 1240 and 2423, that added together give a palindrome (3663).

The spelling of 12402423 in words is "twelve million, four hundred two thousand, four hundred twenty-three".