20127427 has 2 divisors, whose sum is σ = 20127428. Its totient is φ = 20127426.

The previous prime is 20127407. The next prime is 20127431. The reversal of 20127427 is 72472102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20127427 - 2²³ = 11738819 is a prime.

It is a super-2 number, since 2×20127427² = 810226635280658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20127407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10063713 + 10063714.

It is an arithmetic number, because the mean of its divisors is an integer number (10063714).

Almost surely, 2^20127427 is an apocalyptic number.

20127427 is a deficient number, since it is larger than the sum of its proper divisors (1).

20127427 is an equidigital number, since it uses as much as digits as its factorization.

20127427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 20127427 is about 4486.3601059211. The cubic root of 20127427 is about 272.0170251382.

Adding to 20127427 its reverse (72472102), we get a palindrome (92599529).

The spelling of 20127427 in words is "twenty million, one hundred twenty-seven thousand, four hundred twenty-seven".