4127240891 has 2 divisors, whose sum is σ = 4127240892. Its totient is φ = 4127240890.

The previous prime is 4127240867. The next prime is 4127240899. The reversal of 4127240891 is 1980427214.

It is a happy number.

4127240891 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4127240891 - 2⁶ = 4127240827 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (4127240899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2063620445 + 2063620446.

It is an arithmetic number, because the mean of its divisors is an integer number (2063620446).

Almost surely, 2^4127240891 is an apocalyptic number.

4127240891 is a deficient number, since it is larger than the sum of its proper divisors (1).

4127240891 is an equidigital number, since it uses as much as digits as its factorization.

4127240891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 4127240891 is about 64243.6058374684. The cubic root of 4127240891 is about 1604.0575259529.

The spelling of 4127240891 in words is "four billion, one hundred twenty-seven million, two hundred forty thousand, eight hundred ninety-one".