421211120 has 80 divisors (see below), whose sum is σ = 1071440352. Its totient is φ = 152724480.

The previous prime is 421211099. The next prime is 421211123. The reversal of 421211120 is 21112124.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×421211120² = 354837615223308800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421211095 and 421211104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421211123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 574274 + ... + 575006.

Almost surely, 2^421211120 is an apocalyptic number.

421211120 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 421211120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (535720176).

421211120 is an abundant number, since it is smaller than the sum of its proper divisors (650229232).

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

421211120 is a wasteful number, since it uses less digits than its factorization.

421211120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410 (or 1404 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 421211120 is about 20523.4285634735. The cubic root of 421211120 is about 749.6063830867.

Adding to 421211120 its reverse (21112124), we get a palindrome (442323244).

The spelling of 421211120 in words is "four hundred twenty-one million, two hundred eleven thousand, one hundred twenty".