20127043 has 2 divisors, whose sum is σ = 20127044. Its totient is φ = 20127042.

The previous prime is 20127017. The next prime is 20127109. The reversal of 20127043 is 34072102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20127043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20127043.

It is not a weakly prime, because it can be changed into another prime (20127143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10063521 + 10063522.

It is an arithmetic number, because the mean of its divisors is an integer number (10063522).

Almost surely, 2^20127043 is an apocalyptic number.

20127043 is a deficient number, since it is larger than the sum of its proper divisors (1).

20127043 is an equidigital number, since it uses as much as digits as its factorization.

20127043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 20127043 is about 4486.3173093307. The cubic root of 20127043 is about 272.0152952400.

Adding to 20127043 its reverse (34072102), we get a palindrome (54199145).

The spelling of 20127043 in words is "twenty million, one hundred twenty-seven thousand, forty-three".