421001131401503 has 8 divisors (see below), whose sum is σ = 435590123544576. Its totient is φ = 406475158663800.

The previous prime is 421001131401481. The next prime is 421001131401541. The reversal of 421001131401503 is 305104131100124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421001131401503 - 2²⁰ = 421001130352927 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 (421001131901503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15754837751 + ... + 15754864472.

It is an arithmetic number, because the mean of its divisors is an integer number (54448765443072).

Almost surely, 2^{421001131401503} is an apocalyptic number.

421001131401503 is a deficient number, since it is larger than the sum of its proper divisors (14588992143073).

421001131401503 is a wasteful number, since it uses less digits than its factorization.

421001131401503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31509702685.

The product of its (nonzero) digits is 1440, while the sum is 26.

Adding to 421001131401503 its reverse (305104131100124), we get a palindrome (726105262501627).

The spelling of 421001131401503 in words is "four hundred twenty-one trillion, one billion, one hundred thirty-one million, four hundred one thousand, five hundred three".