421834765001 has 16 divisors (see below), whose sum is σ = 454852054608. Its totient is φ = 388899014400.

The previous prime is 421834764979. The next prime is 421834765013. The reversal of 421834765001 is 100567438124.

It can be written as a sum of positive squares in 8 ways, for example, as 20988765625 + 400845999376 = 144875^2 + 633124^2 .

It is not a de Polignac number, because 421834765001 - 2²² = 421830570697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 421834765001.

It is not an unprimeable number, because it can be changed into a prime (421834765081) 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, 42022955 + ... + 42032991.

It is an arithmetic number, because the mean of its divisors is an integer number (28428253413).

Almost surely, 2^421834765001 is an apocalyptic number.

It is an amenable number.

421834765001 is a deficient number, since it is larger than the sum of its proper divisors (33017289607).

421834765001 is a wasteful number, since it uses less digits than its factorization.

421834765001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13772.

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 421834765001 in words is "four hundred twenty-one billion, eight hundred thirty-four million, seven hundred sixty-five thousand, one".