421155 has 36 divisors (see below), whose sum is σ = 853632. Its totient is φ = 191520.

The previous prime is 421147. The next prime is 421159. The reversal of 421155 is 551124.

It is not a de Polignac number, because 421155 - 2³ = 421147 is a prime.

421155 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (421159) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2110 + ... + 2300.

It is an arithmetic number, because the mean of its divisors is an integer number (23712).

2⁴²¹¹⁵⁵ is an apocalyptic number.

421155 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

421155 is an abundant number, since it is smaller than the sum of its proper divisors (432477).

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

421155 is a wasteful number, since it uses less digits than its factorization.

421155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 206 counting only the distinct ones).

The product of its digits is 200, while the sum is 18.

The square root of 421155 is about 648.9645598952. The cubic root of 421155 is about 74.9573090377.

Adding to 421155 its reverse (551124), we get a palindrome (972279).

It can be divided in two parts, 421 and 155, that added together give a square (576 = 24²).

The spelling of 421155 in words is "four hundred twenty-one thousand, one hundred fifty-five".