421344441402 has 64 divisors (see below), whose sum is σ = 860790403200. Its totient is φ = 137459773440.

The previous prime is 421344441383. The next prime is 421344441439. The reversal of 421344441402 is 204144443124.

It is a super-2 number, since 2×421344441402² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108340674 + ... + 108344562.

It is an arithmetic number, because the mean of its divisors is an integer number (13449850050).

Almost surely, 2^421344441402 is an apocalyptic number.

421344441402 is an abundant number, since it is smaller than the sum of its proper divisors (439445961798).

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

421344441402 is a wasteful number, since it uses less digits than its factorization.

421344441402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5631.

The product of its (nonzero) digits is 49152, while the sum is 33.

Adding to 421344441402 its reverse (204144443124), we get a palindrome (625488884526).

The spelling of 421344441402 in words is "four hundred twenty-one billion, three hundred forty-four million, four hundred forty-one thousand, four hundred two".