203420340402 has 8 divisors (see below), whose sum is σ = 406840680816. Its totient is φ = 67806780132.

The previous prime is 203420340391. The next prime is 203420340437. The reversal of 203420340402 is 204043024302.

It is a sphenic number, since it is the product of 3 distinct primes.

203420340402 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16951695028 + ... + 16951695039.

It is an arithmetic number, because the mean of its divisors is an integer number (50855085102).

Almost surely, 2^203420340402 is an apocalyptic number.

203420340402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203420340402 is a wasteful number, since it uses less digits than its factorization.

203420340402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33903390072.

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 203420340402 its reverse (204043024302), we get a palindrome (407463364704).

The spelling of 203420340402 in words is "two hundred three billion, four hundred twenty million, three hundred forty thousand, four hundred two".