12420134 has 4 divisors (see below), whose sum is σ = 18630204. Its totient is φ = 6210066.

The previous prime is 12420131. The next prime is 12420137. The reversal of 12420134 is 43102421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43102421 = 2039 ⋅21139.

It is an interprime number because it is at equal distance from previous prime (12420131) and next prime (12420137).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420131) 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, 3105032 + ... + 3105035.

It is an arithmetic number, because the mean of its divisors is an integer number (4657551).

Almost surely, 2^12420134 is an apocalyptic number.

12420134 is a deficient number, since it is larger than the sum of its proper divisors (6210070).

12420134 is an equidigital number, since it uses as much as digits as its factorization.

12420134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6210069.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 12420134 is about 3524.2210486858. The cubic root of 12420134 is about 231.5841117324.

Adding to 12420134 its reverse (43102421), we get a palindrome (55522555).

The spelling of 12420134 in words is "twelve million, four hundred twenty thousand, one hundred thirty-four".