423121120 has 24 divisors (see below), whose sum is σ = 999624024. Its totient is φ = 169248384.

The previous prime is 423121117. The next prime is 423121141. The reversal of 423121120 is 21121324.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 423121094 and 423121103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1322094 + ... + 1322413.

It is an arithmetic number, because the mean of its divisors is an integer number (41651001).

Almost surely, 2^423121120 is an apocalyptic number.

423121120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423121120 is an abundant number, since it is smaller than the sum of its proper divisors (576502904).

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

423121120 is a wasteful number, since it uses less digits than its factorization.

423121120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2644522 (or 2644514 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 423121120 is about 20569.9081184141. The cubic root of 423121120 is about 750.7377156111.

Adding to 423121120 its reverse (21121324), we get a palindrome (444242444).

The spelling of 423121120 in words is "four hundred twenty-three million, one hundred twenty-one thousand, one hundred twenty".