12420131 has 2 divisors, whose sum is σ = 12420132. Its totient is φ = 12420130.

The previous prime is 12420097. The next prime is 12420137. The reversal of 12420131 is 13102421.

12420131 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12420131 - 2¹⁸ = 12157987 is a prime.

It is a super-2 number, since 2×12420131² = 308519308114322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12420137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6210065 + 6210066.

It is an arithmetic number, because the mean of its divisors is an integer number (6210066).

Almost surely, 2^12420131 is an apocalyptic number.

12420131 is a deficient number, since it is larger than the sum of its proper divisors (1).

12420131 is an equidigital number, since it uses as much as digits as its factorization.

12420131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 12420131 is about 3524.2206230598. The cubic root of 12420131 is about 231.5840930865.

Adding to 12420131 its reverse (13102421), we get a palindrome (25522552).

The spelling of 12420131 in words is "twelve million, four hundred twenty thousand, one hundred thirty-one".