421734380 has 24 divisors (see below), whose sum is σ = 888070848. Its totient is φ = 168231168.

The previous prime is 421734377. The next prime is 421734389. The reversal of 421734380 is 83437124.

It is not an unprimeable number, because it can be changed into a prime (421734389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21389 + ... + 36068.

It is an arithmetic number, because the mean of its divisors is an integer number (37002952).

Almost surely, 2^421734380 is an apocalyptic number.

It is an amenable number.

421734380 is an abundant number, since it is smaller than the sum of its proper divisors (466336468).

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

421734380 is a wasteful number, since it uses less digits than its factorization.

421734380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57833 (or 57831 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 421734380 is about 20536.1724768760. The cubic root of 421734380 is about 749.9166603693.

The spelling of 421734380 in words is "four hundred twenty-one million, seven hundred thirty-four thousand, three hundred eighty".