421244321001234 has 64 divisors (see below), whose sum is σ = 866052534092160. Its totient is φ = 136494434672640.

The previous prime is 421244321001193. The next prime is 421244321001239. The reversal of 421244321001234 is 432100123442124.

It is a junction number, because it is equal to n+sod(n) for n = 421244321001195 and 421244321001204.

It is not an unprimeable number, because it can be changed into a prime (421244321001239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8566901469 + ... + 8566950639.

It is an arithmetic number, because the mean of its divisors is an integer number (13532070845190).

Almost surely, 2^{421244321001234} is an apocalyptic number.

421244321001234 is an abundant number, since it is smaller than the sum of its proper divisors (444808213090926).

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

421244321001234 is a wasteful number, since it uses less digits than its factorization.

421244321001234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83835.

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 421244321001234 its reverse (432100123442124), we get a palindrome (853344444443358).

The spelling of 421244321001234 in words is "four hundred twenty-one trillion, two hundred forty-four billion, three hundred twenty-one million, one thousand, two hundred thirty-four".