10421021405 has 8 divisors (see below), whose sum is σ = 12796045152. Its totient is φ = 8142937488.

The previous prime is 10421021393. The next prime is 10421021419. The reversal of 10421021405 is 50412012401.

It is a happy number.

10421021405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10421021405 - 2¹⁰ = 10421020381 is a prime.

It is a Duffinian number.

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, 24234719 + ... + 24235148.

It is an arithmetic number, because the mean of its divisors is an integer number (1599505644).

Almost surely, 2^10421021405 is an apocalyptic number.

It is an amenable number.

10421021405 is a deficient number, since it is larger than the sum of its proper divisors (2375023747).

10421021405 is an equidigital number, since it uses as much as digits as its factorization.

10421021405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48469915.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 10421021405 its reverse (50412012401), we get a palindrome (60833033806).

The spelling of 10421021405 in words is "ten billion, four hundred twenty-one million, twenty-one thousand, four hundred five".