420839829801 has 16 divisors (see below), whose sum is σ = 644965257600. Its totient is φ = 270885407184.

The previous prime is 420839829779. The next prime is 420839829847. The reversal of 420839829801 is 108928938024.

It is not a de Polignac number, because 420839829801 - 2⁷ = 420839829673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420839829871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268734741 + ... + 268736306.

It is an arithmetic number, because the mean of its divisors is an integer number (40310328600).

Almost surely, 2^420839829801 is an apocalyptic number.

It is an amenable number.

420839829801 is a deficient number, since it is larger than the sum of its proper divisors (224125427799).

420839829801 is a wasteful number, since it uses less digits than its factorization.

420839829801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537471085 (or 537471079 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The spelling of 420839829801 in words is "four hundred twenty billion, eight hundred thirty-nine million, eight hundred twenty-nine thousand, eight hundred one".