1420101191 has 2 divisors, whose sum is σ = 1420101192. Its totient is φ = 1420101190.

The previous prime is 1420101143. The next prime is 1420101209. The reversal of 1420101191 is 1911010241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1420101191 - 2⁶ = 1420101127 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1420101131) 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, 710050595 + 710050596.

It is an arithmetic number, because the mean of its divisors is an integer number (710050596).

Almost surely, 2^1420101191 is an apocalyptic number.

1420101191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420101191 is an equidigital number, since it uses as much as digits as its factorization.

1420101191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 1420101191 is about 37684.2300040746. The cubic root of 1420101191 is about 1124.0175629846.

The spelling of 1420101191 in words is "one billion, four hundred twenty million, one hundred one thousand, one hundred ninety-one".