421421140404 has 36 divisors (see below), whose sum is σ = 1162100721600. Its totient is φ = 127703375760.

The previous prime is 421421140403. The next prime is 421421140411. The reversal of 421421140404 is 404041124124.

It is a happy number.

421421140404 is a `hidden beast` number, since 4 + 2 + 1 + 4 + 211 + 40 + 404 = 666.

421421140404 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421421140403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 532097004 + ... + 532097795.

It is an arithmetic number, because the mean of its divisors is an integer number (32280575600).

Almost surely, 2^421421140404 is an apocalyptic number.

421421140404 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

421421140404 is an abundant number, since it is smaller than the sum of its proper divisors (740679581196).

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

421421140404 is a wasteful number, since it uses less digits than its factorization.

421421140404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064194820 (or 1064194815 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 421421140404 its reverse (404041124124), we get a palindrome (825462264528).

The spelling of 421421140404 in words is "four hundred twenty-one billion, four hundred twenty-one million, one hundred forty thousand, four hundred four".