421200044 has 6 divisors (see below), whose sum is σ = 737100084. Its totient is φ = 210600020.

The previous prime is 421199993. The next prime is 421200047. The reversal of 421200044 is 440002124.

It is a junction number, because it is equal to n+sod(n) for n = 421199995 and 421200031.

It is not an unprimeable number, because it can be changed into a prime (421200047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52650002 + ... + 52650009.

It is an arithmetic number, because the mean of its divisors is an integer number (122850014).

Almost surely, 2^421200044 is an apocalyptic number.

It is an amenable number.

421200044 is a deficient number, since it is larger than the sum of its proper divisors (315900040).

421200044 is a wasteful number, since it uses less digits than its factorization.

421200044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105300015 (or 105300013 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 421200044 is about 20523.1587237443. The cubic root of 421200044 is about 749.5998125788.

Adding to 421200044 its reverse (440002124), we get a palindrome (861202168).

The spelling of 421200044 in words is "four hundred twenty-one million, two hundred thousand, forty-four".