10403442021 has 16 divisors (see below), whose sum is σ = 15968582784. Its totient is φ = 5901429504.

The previous prime is 10403442013. The next prime is 10403442031. The reversal of 10403442021 is 12024430401.

It is not a de Polignac number, because 10403442021 - 2³ = 10403442013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10403442031) 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, 1805160 + ... + 1810913.

It is an arithmetic number, because the mean of its divisors is an integer number (998036424).

Almost surely, 2^10403442021 is an apocalyptic number.

It is an amenable number.

10403442021 is a deficient number, since it is larger than the sum of its proper divisors (5565140763).

10403442021 is a wasteful number, since it uses less digits than its factorization.

10403442021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3616220.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 10403442021 its reverse (12024430401), we get a palindrome (22427872422).

The spelling of 10403442021 in words is "ten billion, four hundred three million, four hundred forty-two thousand, twenty-one".