10400421203 has 4 divisors (see below), whose sum is σ = 10406466168. Its totient is φ = 10394376240.

The previous prime is 10400421193. The next prime is 10400421217. The reversal of 10400421203 is 30212400401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30212400401 = 3407 ⋅8867743.

It is a cyclic number.

It is not a de Polignac number, because 10400421203 - 2¹⁸ = 10400159059 is a prime.

It is a super-2 number, since 2×10400421203² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10400421263) 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, 3019901 + ... + 3023342.

It is an arithmetic number, because the mean of its divisors is an integer number (2601616542).

Almost surely, 2^10400421203 is an apocalyptic number.

10400421203 is a deficient number, since it is larger than the sum of its proper divisors (6044965).

10400421203 is an equidigital number, since it uses as much as digits as its factorization.

10400421203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6044964.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 10400421203 its reverse (30212400401), we get a palindrome (40612821604).

The spelling of 10400421203 in words is "ten billion, four hundred million, four hundred twenty-one thousand, two hundred three".