10400030421 has 16 divisors (see below), whose sum is σ = 15449177088. Its totient is φ = 6168940400.

The previous prime is 10400030413. The next prime is 10400030423. The reversal of 10400030421 is 12403000401.

It is a cyclic number.

It is not a de Polignac number, because 10400030421 - 2³ = 10400030413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10400030421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10400030423) 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, 3351135 + ... + 3354236.

It is an arithmetic number, because the mean of its divisors is an integer number (965573568).

Almost surely, 2^10400030421 is an apocalyptic number.

10400030421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10400030421 is a deficient number, since it is larger than the sum of its proper divisors (5049146667).

10400030421 is a wasteful number, since it uses less digits than its factorization.

10400030421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6705432.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 10400030421 its reverse (12403000401), we get a palindrome (22803030822).

It can be divided in two parts, 104000 and 30421, that added together give a triangular number (134421 = T₅₁₈).

The spelling of 10400030421 in words is "ten billion, four hundred million, thirty thousand, four hundred twenty-one".