1004000421 has 16 divisors (see below), whose sum is σ = 1389104640. Its totient is φ = 644553840.

The previous prime is 1004000411. The next prime is 1004000423. The reversal of 1004000421 is 1240004001.

It is a de Polignac number, because none of the positive numbers 2^k-1004000421 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1004000397 and 1004000406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004000423) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 45651 + ... + 63968.

It is an arithmetic number, because the mean of its divisors is an integer number (86819040).

Almost surely, 2^1004000421 is an apocalyptic number.

It is an amenable number.

1004000421 is a deficient number, since it is larger than the sum of its proper divisors (385104219).

1004000421 is a wasteful number, since it uses less digits than its factorization.

1004000421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109736.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1004000421 is about 31685.9656788301. The cubic root of 1004000421 is about 1001.3316994560.

Adding to 1004000421 its reverse (1240004001), we get a palindrome (2244004422).

The spelling of 1004000421 in words is "one billion, four million, four hundred twenty-one", and thus it is an aban number.