203242442399 has 4 divisors (see below), whose sum is σ = 203243593200. Its totient is φ = 203241291600.

The previous prime is 203242442393. The next prime is 203242442411. The reversal of 203242442399 is 993244242302.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 203242442399 - 2²⁴ = 203225665183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203242442393) 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, 248627 + ... + 684324.

It is an arithmetic number, because the mean of its divisors is an integer number (50810898300).

Almost surely, 2^203242442399 is an apocalyptic number.

203242442399 is a deficient number, since it is larger than the sum of its proper divisors (1150801).

203242442399 is an equidigital number, since it uses as much as digits as its factorization.

203242442399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150800.

The product of its (nonzero) digits is 746496, while the sum is 44.

The spelling of 203242442399 in words is "two hundred three billion, two hundred forty-two million, four hundred forty-two thousand, three hundred ninety-nine".