421300505 has 8 divisors (see below), whose sum is σ = 505812552. Its totient is φ = 336872448.

The previous prime is 421300493. The next prime is 421300519. The reversal of 421300505 is 505003124.

It can be written as a sum of positive squares in 4 ways, for example, as 26245129 + 395055376 = 5123^2 + 19876^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421300505 - 2⁸ = 421300249 is a prime.

It is a Duffinian 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, 9374 + ... + 30503.

It is an arithmetic number, because the mean of its divisors is an integer number (63226569).

Almost surely, 2^421300505 is an apocalyptic number.

It is an amenable number.

421300505 is a deficient number, since it is larger than the sum of its proper divisors (84512047).

421300505 is a wasteful number, since it uses less digits than its factorization.

421300505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41995.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 421300505 is about 20525.6060811855. The cubic root of 421300505 is about 749.6594038676.

Adding to 421300505 its reverse (505003124), we get a palindrome (926303629).

The spelling of 421300505 in words is "four hundred twenty-one million, three hundred thousand, five hundred five".