421512120 has 64 divisors (see below), whose sum is σ = 1405044000. Its totient is φ = 112402944.

The previous prime is 421512067. The next prime is 421512137. The reversal of 421512120 is 21215124.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 421512093 and 421512102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194065 + ... + 196224.

Almost surely, 2^421512120 is an apocalyptic number.

421512120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421512120 is an abundant number, since it is smaller than the sum of its proper divisors (983531880).

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

421512120 is a wasteful number, since it uses less digits than its factorization.

421512120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390309 (or 390299 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 421512120 is about 20530.7603366266. The cubic root of 421512120 is about 749.7848983143.

Adding to 421512120 its reverse (21215124), we get a palindrome (442727244).

The spelling of 421512120 in words is "four hundred twenty-one million, five hundred twelve thousand, one hundred twenty".