10421204243 has 4 divisors (see below), whose sum is σ = 10422991800. Its totient is φ = 10419416688.

The previous prime is 10421204237. The next prime is 10421204263. The reversal of 10421204243 is 34240212401.

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

It is a cyclic number.

It is not a de Polignac number, because 10421204243 - 2¹⁴ = 10421187859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10421204263) 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, 885005 + ... + 896702.

It is an arithmetic number, because the mean of its divisors is an integer number (2605747950).

Almost surely, 2^10421204243 is an apocalyptic number.

10421204243 is a deficient number, since it is larger than the sum of its proper divisors (1787557).

10421204243 is an equidigital number, since it uses as much as digits as its factorization.

10421204243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1787556.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 10421204243 its reverse (34240212401), we get a palindrome (44661416644).

The spelling of 10421204243 in words is "ten billion, four hundred twenty-one million, two hundred four thousand, two hundred forty-three".