1243214321004 has 192 divisors, whose sum is σ = 3348163123200. Its totient is φ = 398687325696.

The previous prime is 1243214320991. The next prime is 1243214321227. The reversal of 1243214321004 is 4001234123421.

1243214321004 is a `hidden beast` number, since 1 + 2 + 432 + 14 + 3 + 210 + 0 + 4 = 666.

It is a super-3 number, since 3×1243214321004³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 78147219 + ... + 78163125.

It is an arithmetic number, because the mean of its divisors is an integer number (17438349600).

Almost surely, 2^{1243214321004} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1243214321004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1674081561600).

1243214321004 is an abundant number, since it is smaller than the sum of its proper divisors (2104948802196).

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

1243214321004 is a wasteful number, since it uses less digits than its factorization.

1243214321004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16229 (or 16221 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 1243214321004 its reverse (4001234123421), we get a palindrome (5244448444425).

The spelling of 1243214321004 in words is "one trillion, two hundred forty-three billion, two hundred fourteen million, three hundred twenty-one thousand, four".