2101420459 has 2 divisors, whose sum is σ = 2101420460. Its totient is φ = 2101420458.

The previous prime is 2101420429. The next prime is 2101420471. The reversal of 2101420459 is 9540241012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101420459 is a prime.

It is not a weakly prime, because it can be changed into another prime (2101420429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050710229 + 1050710230.

It is an arithmetic number, because the mean of its divisors is an integer number (1050710230).

Almost surely, 2^2101420459 is an apocalyptic number.

2101420459 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101420459 is an equidigital number, since it uses as much as digits as its factorization.

2101420459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2101420459 is about 45841.2528079240. The cubic root of 2101420459 is about 1280.8678316895.

The spelling of 2101420459 in words is "two billion, one hundred one million, four hundred twenty thousand, four hundred fifty-nine".