421134305 has 4 divisors (see below), whose sum is σ = 505361172. Its totient is φ = 336907440.

The previous prime is 421134293. The next prime is 421134313. The reversal of 421134305 is 503431124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 85951441 + 335182864 = 9271^2 + 18308^2 .

It is not a de Polignac number, because 421134305 - 2²² = 416940001 is a prime.

It is a Duffinian number.

It is a Curzon 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, 42113426 + ... + 42113435.

It is an arithmetic number, because the mean of its divisors is an integer number (126340293).

Almost surely, 2^421134305 is an apocalyptic number.

It is an amenable number.

421134305 is a deficient number, since it is larger than the sum of its proper divisors (84226867).

421134305 is an equidigital number, since it uses as much as digits as its factorization.

421134305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84226866.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 421134305 is about 20521.5570802997. The cubic root of 421134305 is about 749.5608124989.

Adding to 421134305 its reverse (503431124), we get a palindrome (924565429).

The spelling of 421134305 in words is "four hundred twenty-one million, one hundred thirty-four thousand, three hundred five".