421405300 has 18 divisors (see below), whose sum is σ = 914449718. Its totient is φ = 168562080.

The previous prime is 421405291. The next prime is 421405307. The reversal of 421405300 is 3504124.

It can be written as a sum of positive squares in 3 ways, for example, as 1073296 + 420332004 = 1036^2 + 20502^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421405307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2106927 + ... + 2107126.

Almost surely, 2^421405300 is an apocalyptic number.

It is an amenable number.

421405300 is an abundant number, since it is smaller than the sum of its proper divisors (493044418).

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

421405300 is a wasteful number, since it uses less digits than its factorization.

421405300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4214067 (or 4214060 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 421405300 is about 20528.1587094410. The cubic root of 421405300 is about 749.7215558972.

Adding to 421405300 its reverse (3504124), we get a palindrome (424909424).

The spelling of 421405300 in words is "four hundred twenty-one million, four hundred five thousand, three hundred".