421135320 has 32 divisors (see below), whose sum is σ = 1263406320. Its totient is φ = 112302720.

The previous prime is 421135301. The next prime is 421135331. The reversal of 421135320 is 23531124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1754611 + ... + 1754850.

Almost surely, 2^421135320 is an apocalyptic number.

421135320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421135320 is an abundant number, since it is smaller than the sum of its proper divisors (842271000).

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

421135320 is a wasteful number, since it uses less digits than its factorization.

421135320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3509475 (or 3509471 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 421135320 is about 20521.5818103771. The cubic root of 421135320 is about 749.5614146850.

Adding to 421135320 its reverse (23531124), we get a palindrome (444666444).

The spelling of 421135320 in words is "four hundred twenty-one million, one hundred thirty-five thousand, three hundred twenty".