421080 has 96 divisors (see below), whose sum is σ = 1436400. Its totient is φ = 98560.

The previous prime is 421079. The next prime is 421081. The reversal of 421080 is 80124.

It is an interprime number because it is at equal distance from previous prime (421079) and next prime (421081).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421081) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14506 + ... + 14534.

2⁴²¹⁰⁸⁰ is an apocalyptic number.

421080 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 421080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (718200).

421080 is an abundant number, since it is smaller than the sum of its proper divisors (1015320).

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

421080 is a wasteful number, since it uses less digits than its factorization.

421080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 421080 is about 648.9067729651. The cubic root of 421080 is about 74.9528592651.

The spelling of 421080 in words is "four hundred twenty-one thousand, eighty".