420830783827 has 2 divisors, whose sum is σ = 420830783828. Its totient is φ = 420830783826.

The previous prime is 420830783749. The next prime is 420830783897. The reversal of 420830783827 is 728387038024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420830783827 - 2⁷ = 420830783699 is a prime.

It is not a weakly prime, because it can be changed into another prime (420830783897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210415391913 + 210415391914.

It is an arithmetic number, because the mean of its divisors is an integer number (210415391914).

Almost surely, 2^420830783827 is an apocalyptic number.

420830783827 is a deficient number, since it is larger than the sum of its proper divisors (1).

420830783827 is an equidigital number, since it uses as much as digits as its factorization.

420830783827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3612672, while the sum is 52.

The spelling of 420830783827 in words is "four hundred twenty billion, eight hundred thirty million, seven hundred eighty-three thousand, eight hundred twenty-seven".