421950310219 has 4 divisors (see below), whose sum is σ = 422006450544. Its totient is φ = 421894169896.

The previous prime is 421950310151. The next prime is 421950310231. The reversal of 421950310219 is 912013059124.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421950310219 is a prime.

It is a super-2 number, since 2×421950310219² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421950316219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28058887 + ... + 28073920.

It is an arithmetic number, because the mean of its divisors is an integer number (105501612636).

Almost surely, 2^421950310219 is an apocalyptic number.

421950310219 is a deficient number, since it is larger than the sum of its proper divisors (56140325).

421950310219 is an equidigital number, since it uses as much as digits as its factorization.

421950310219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56140324.

The product of its (nonzero) digits is 19440, while the sum is 37.

The spelling of 421950310219 in words is "four hundred twenty-one billion, nine hundred fifty million, three hundred ten thousand, two hundred nineteen".