204430442122403 has 4 divisors (see below), whose sum is σ = 233634790997040. Its totient is φ = 175226093247768.

The previous prime is 204430442122391. The next prime is 204430442122481. The reversal of 204430442122403 is 304221244034402.

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 204430442122403 - 2¹² = 204430442118307 is a prime.

It is a super-2 number, since 2×204430442122403² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204430442122483) 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, 14602174437308 + ... + 14602174437321.

It is an arithmetic number, because the mean of its divisors is an integer number (58408697749260).

Almost surely, 2^{204430442122403} is an apocalyptic number.

204430442122403 is a deficient number, since it is larger than the sum of its proper divisors (29204348874637).

204430442122403 is an equidigital number, since it uses as much as digits as its factorization.

204430442122403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29204348874636.

The product of its (nonzero) digits is 147456, while the sum is 35.

Adding to 204430442122403 its reverse (304221244034402), we get a palindrome (508651686156805).

The spelling of 204430442122403 in words is "two hundred four trillion, four hundred thirty billion, four hundred forty-two million, one hundred twenty-two thousand, four hundred three".