10404430421 has 16 divisors (see below), whose sum is σ = 13043442048. Its totient is φ = 8062545600.

The previous prime is 10404430409. The next prime is 10404430441. The reversal of 10404430421 is 12403440401.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10404430421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10404430441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359330 + ... + 387203.

It is an arithmetic number, because the mean of its divisors is an integer number (815215128).

Almost surely, 2^10404430421 is an apocalyptic number.

10404430421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10404430421 is a deficient number, since it is larger than the sum of its proper divisors (2639011627).

10404430421 is a wasteful number, since it uses less digits than its factorization.

10404430421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746732.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 10404430421 its reverse (12403440401), we get a palindrome (22807870822).

The spelling of 10404430421 in words is "ten billion, four hundred four million, four hundred thirty thousand, four hundred twenty-one".