21741127 has 2 divisors, whose sum is σ = 21741128. Its totient is φ = 21741126.

The previous prime is 21741121. The next prime is 21741143. The reversal of 21741127 is 72114712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21741127 - 2²³ = 13352519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21741121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10870563 + 10870564.

It is an arithmetic number, because the mean of its divisors is an integer number (10870564).

Almost surely, 2^21741127 is an apocalyptic number.

21741127 is a deficient number, since it is larger than the sum of its proper divisors (1).

21741127 is an equidigital number, since it uses as much as digits as its factorization.

21741127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 784, while the sum is 25.

The square root of 21741127 is about 4662.7381440523. The cubic root of 21741127 is about 279.1005448608.

Adding to 21741127 its reverse (72114712), we get a palindrome (93855839).

The spelling of 21741127 in words is "twenty-one million, seven hundred forty-one thousand, one hundred twenty-seven".