12427091 has 2 divisors, whose sum is σ = 12427092. Its totient is φ = 12427090.

The previous prime is 12427081. The next prime is 12427097. The reversal of 12427091 is 19072421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12427091 - 2⁶ = 12427027 is a prime.

It is equal to p₈₁₄₂₈₃ and since 12427091 and 814283 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12427091.

It is not a weakly prime, because it can be changed into another prime (12427097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6213545 + 6213546.

It is an arithmetic number, because the mean of its divisors is an integer number (6213546).

Almost surely, 2^12427091 is an apocalyptic number.

12427091 is a deficient number, since it is larger than the sum of its proper divisors (1).

12427091 is an equidigital number, since it uses as much as digits as its factorization.

12427091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 12427091 is about 3525.2079371294. The cubic root of 12427091 is about 231.6273434168.

The spelling of 12427091 in words is "twelve million, four hundred twenty-seven thousand, ninety-one".