4120000091 has 2 divisors, whose sum is σ = 4120000092. Its totient is φ = 4120000090.

The previous prime is 4120000069. The next prime is 4120000127. The reversal of 4120000091 is 1900000214.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4120000091 - 2¹⁰ = 4119999067 is a prime.

It is not a weakly prime, because it can be changed into another prime (4120000691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2060000045 + 2060000046.

It is an arithmetic number, because the mean of its divisors is an integer number (2060000046).

Almost surely, 2^4120000091 is an apocalyptic number.

4120000091 is a deficient number, since it is larger than the sum of its proper divisors (1).

4120000091 is an equidigital number, since it uses as much as digits as its factorization.

4120000091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 4120000091 is about 64187.2268523886. The cubic root of 4120000091 is about 1603.1189280782.

The spelling of 4120000091 in words is "four billion, one hundred twenty million, ninety-one", and thus it is an aban number.