1420101091 has 2 divisors, whose sum is σ = 1420101092. Its totient is φ = 1420101090.

The previous prime is 1420101071. The next prime is 1420101127. The reversal of 1420101091 is 1901010241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1420101091 - 2⁹ = 1420100579 is a prime.

It is not a weakly prime, because it can be changed into another prime (1420101071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710050545 + 710050546.

It is an arithmetic number, because the mean of its divisors is an integer number (710050546).

Almost surely, 2^1420101091 is an apocalyptic number.

1420101091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420101091 is an equidigital number, since it uses as much as digits as its factorization.

1420101091 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 19.

The square root of 1420101091 is about 37684.2286772597. The cubic root of 1420101091 is about 1124.0175366011.

The spelling of 1420101091 in words is "one billion, four hundred twenty million, one hundred one thousand, ninety-one".