421134320 has 20 divisors (see below), whose sum is σ = 979137480. Its totient is φ = 168453696.

The previous prime is 421134313. The next prime is 421134341. The reversal of 421134320 is 23431124.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 421134292 and 421134301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2632010 + ... + 2632169.

It is an arithmetic number, because the mean of its divisors is an integer number (48956874).

Almost surely, 2^421134320 is an apocalyptic number.

421134320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421134320 is an abundant number, since it is smaller than the sum of its proper divisors (558003160).

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

421134320 is a wasteful number, since it uses less digits than its factorization.

421134320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5264192 (or 5264186 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 421134320 is about 20521.5574457691. The cubic root of 421134320 is about 749.5608213983.

Adding to 421134320 its reverse (23431124), we get a palindrome (444565444).

The spelling of 421134320 in words is "four hundred twenty-one million, one hundred thirty-four thousand, three hundred twenty".