421306860 has 72 divisors (see below), whose sum is σ = 1277413200. Its totient is φ = 103703808.

The previous prime is 421306811. The next prime is 421306861. The reversal of 421306860 is 68603124.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (421306861) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10635 + ... + 30914.

It is an arithmetic number, because the mean of its divisors is an integer number (17741850).

Almost surely, 2^421306860 is an apocalyptic number.

It is an amenable number.

421306860 is an abundant number, since it is smaller than the sum of its proper divisors (856106340).

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

421306860 is a wasteful number, since it uses less digits than its factorization.

421306860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41587 (or 41572 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 421306860 is about 20525.7608872363. The cubic root of 421306860 is about 749.6631731974.

Adding to 421306860 its reverse (68603124), we get a palindrome (489909984).

The spelling of 421306860 in words is "four hundred twenty-one million, three hundred six thousand, eight hundred sixty".