421403144422 has 64 divisors (see below), whose sum is σ = 703850112000. Its totient is φ = 188029340928.

The previous prime is 421403144417. The next prime is 421403144431. The reversal of 421403144422 is 224441304124.

It is a happy number.

It is a super-2 number, since 2×421403144422² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 20831829 + ... + 20852047.

It is an arithmetic number, because the mean of its divisors is an integer number (10997658000).

Almost surely, 2^421403144422 is an apocalyptic number.

421403144422 is a deficient number, since it is larger than the sum of its proper divisors (282446967578).

421403144422 is a wasteful number, since it uses less digits than its factorization.

421403144422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20525.

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 421403144422 its reverse (224441304124), we get a palindrome (645844448546).

The spelling of 421403144422 in words is "four hundred twenty-one billion, four hundred three million, one hundred forty-four thousand, four hundred twenty-two".