421980163 has 8 divisors (see below), whose sum is σ = 460970496. Its totient is φ = 383094600.

The previous prime is 421980157. The next prime is 421980197. The reversal of 421980163 is 361089124.

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 421980163 - 2¹³ = 421971971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421980763) 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, 17643 + ... + 33988.

It is an arithmetic number, because the mean of its divisors is an integer number (57621312).

Almost surely, 2^421980163 is an apocalyptic number.

421980163 is a deficient number, since it is larger than the sum of its proper divisors (38990333).

421980163 is a wasteful number, since it uses less digits than its factorization.

421980163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52385.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 421980163 is about 20542.1557534744. The cubic root of 421980163 is about 750.0623136374.

The spelling of 421980163 in words is "four hundred twenty-one million, nine hundred eighty thousand, one hundred sixty-three".