10403402421 has 16 divisors (see below), whose sum is σ = 14214946304. Its totient is φ = 6765740784.

The previous prime is 10403402419. The next prime is 10403402423. The reversal of 10403402421 is 12420430401.

10403402421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (10403402419) and next prime (10403402423).

It is not a de Polignac number, because 10403402421 - 2¹ = 10403402419 is a prime.

It is a super-2 number, since 2×10403402421² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10403402423) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 230551 + ... + 271956.

It is an arithmetic number, because the mean of its divisors is an integer number (888434144).

Almost surely, 2^10403402421 is an apocalyptic number.

It is an amenable number.

10403402421 is a deficient number, since it is larger than the sum of its proper divisors (3811543883).

10403402421 is a wasteful number, since it uses less digits than its factorization.

10403402421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502680.

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

Adding to 10403402421 its reverse (12420430401), we get a palindrome (22823832822).

The spelling of 10403402421 in words is "ten billion, four hundred three million, four hundred two thousand, four hundred twenty-one".