203342421434 has 32 divisors (see below), whose sum is σ = 310475773440. Its totient is φ = 99869535792.

The previous prime is 203342421427. The next prime is 203342421437. The reversal of 203342421434 is 434124243302.

It is a self number, because there is not a number n which added to its sum of digits gives 203342421434.

It is not an unprimeable number, because it can be changed into a prime (203342421437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15446147 + ... + 15459305.

It is an arithmetic number, because the mean of its divisors is an integer number (9702367920).

Almost surely, 2^203342421434 is an apocalyptic number.

203342421434 is a deficient number, since it is larger than the sum of its proper divisors (107133352006).

203342421434 is a wasteful number, since it uses less digits than its factorization.

203342421434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13874.

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 203342421434 its reverse (434124243302), we get a palindrome (637466664736).

The spelling of 203342421434 in words is "two hundred three billion, three hundred forty-two million, four hundred twenty-one thousand, four hundred thirty-four".