421243313412 has 48 divisors (see below), whose sum is σ = 1041161506560. Its totient is φ = 132098545152.

The previous prime is 421243313399. The next prime is 421243313417. The reversal of 421243313412 is 214313342124.

It is a super-3 number, since 3×421243313412³ (a number of 36 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 421243313412.

It is not an unprimeable number, because it can be changed into a prime (421243313417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42789 + ... + 918867.

It is an arithmetic number, because the mean of its divisors is an integer number (21690864720).

Almost surely, 2^421243313412 is an apocalyptic number.

It is an amenable number.

421243313412 is an abundant number, since it is smaller than the sum of its proper divisors (619918193148).

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

421243313412 is a wasteful number, since it uses less digits than its factorization.

421243313412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878460 (or 878458 counting only the distinct ones).

The product of its digits is 13824, while the sum is 30.

Adding to 421243313412 its reverse (214313342124), we get a palindrome (635556655536).

The spelling of 421243313412 in words is "four hundred twenty-one billion, two hundred forty-three million, three hundred thirteen thousand, four hundred twelve".