421213618309 has 8 divisors (see below), whose sum is σ = 459511254720. Its totient is φ = 382916896800.

The previous prime is 421213618307. The next prime is 421213618321. The reversal of 421213618309 is 903816312124.

It is a happy number.

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 421213618309 - 2¹ = 421213618307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421213618303) 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 7 ways as a sum of consecutive naturals, for example, 1039857 + ... + 1386985.

It is an arithmetic number, because the mean of its divisors is an integer number (57438906840).

Almost surely, 2^421213618309 is an apocalyptic number.

It is an amenable number.

421213618309 is a deficient number, since it is larger than the sum of its proper divisors (38297636411).

421213618309 is a wasteful number, since it uses less digits than its factorization.

421213618309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457451.

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 421213618309 in words is "four hundred twenty-one billion, two hundred thirteen million, six hundred eighteen thousand, three hundred nine".