421330044 has 24 divisors (see below), whose sum is σ = 983713360. Its totient is φ = 140356224.

The previous prime is 421329991. The next prime is 421330069. The reversal of 421330044 is 440033124.

It is a self number, because there is not a number n which added to its sum of digits gives 421330044.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11022 + ... + 31050.

Almost surely, 2^421330044 is an apocalyptic number.

It is an amenable number.

421330044 is an abundant number, since it is smaller than the sum of its proper divisors (562383316).

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

421330044 is a wasteful number, since it uses less digits than its factorization.

421330044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21789 (or 21787 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 421330044 is about 20526.3256331960. The cubic root of 421330044 is about 749.6769239603.

Adding to 421330044 its reverse (440033124), we get a palindrome (861363168).

The spelling of 421330044 in words is "four hundred twenty-one million, three hundred thirty thousand, forty-four".