10400130421 has 4 divisors (see below), whose sum is σ = 10403478700. Its totient is φ = 10396782144.

The previous prime is 10400130379. The next prime is 10400130439. The reversal of 10400130421 is 12403100401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5254220196 + 5145910225 = 72486^2 + 71735^2 .

It is a cyclic number.

It is not a de Polignac number, because 10400130421 - 2¹⁷ = 10399999349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10400130395 and 10400130404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10400130451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1669476 + ... + 1675693.

It is an arithmetic number, because the mean of its divisors is an integer number (2600869675).

Almost surely, 2^10400130421 is an apocalyptic number.

It is an amenable number.

10400130421 is a deficient number, since it is larger than the sum of its proper divisors (3348279).

10400130421 is an equidigital number, since it uses as much as digits as its factorization.

10400130421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3348278.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 10400130421 its reverse (12403100401), we get a palindrome (22803230822).

The spelling of 10400130421 in words is "ten billion, four hundred million, one hundred thirty thousand, four hundred twenty-one".