421834764999 has 4 divisors (see below), whose sum is σ = 562446353336. Its totient is φ = 281223176664.

The previous prime is 421834764979. The next prime is 421834765013. The reversal of 421834764999 is 999467438124.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 421834764999 - 2¹² = 421834760903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421834764979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70305794164 + ... + 70305794169.

It is an arithmetic number, because the mean of its divisors is an integer number (140611588334).

Almost surely, 2^421834764999 is an apocalyptic number.

421834764999 is a deficient number, since it is larger than the sum of its proper divisors (140611588337).

421834764999 is a wasteful number, since it uses less digits than its factorization.

421834764999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140611588336.

The product of its digits is 94058496, while the sum is 66.

The spelling of 421834764999 in words is "four hundred twenty-one billion, eight hundred thirty-four million, seven hundred sixty-four thousand, nine hundred ninety-nine".