421001311530320 has 160 divisors (see below), whose sum is σ = 1025842454452224. Its totient is φ = 160485005721600.

The previous prime is 421001311530313. The next prime is 421001311530323. The reversal of 421001311530320 is 23035113100124.

It is a self number, because there is not a number n which added to its sum of digits gives 421001311530320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421001311530323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114232709 + ... + 117860571.

Almost surely, 2^{421001311530320} is an apocalyptic number.

421001311530320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421001311530320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (512921227226112).

421001311530320 is an abundant number, since it is smaller than the sum of its proper divisors (604841142921904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421001311530320 is a wasteful number, since it uses less digits than its factorization.

421001311530320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3628621 (or 3628615 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 421001311530320 its reverse (23035113100124), we get a palindrome (444036424630444).

The spelling of 421001311530320 in words is "four hundred twenty-one trillion, one billion, three hundred eleven million, five hundred thirty thousand, three hundred twenty".