203142143323402 has 16 divisors (see below), whose sum is σ = 313029508812552. Its totient is φ = 98813009658880.

The previous prime is 203142143323349. The next prime is 203142143323409. The reversal of 203142143323402 is 204323341241302.

It can be written as a sum of positive squares in 4 ways, for example, as 44940813771681 + 158201329551721 = 6703791^2 + 12577811^2 .

It is not an unprimeable number, because it can be changed into a prime (203142143323409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3508955773 + ... + 3509013664.

Almost surely, 2^{203142143323402} is an apocalyptic number.

203142143323402 is a deficient number, since it is larger than the sum of its proper divisors (109887365489150).

203142143323402 is a wasteful number, since it uses less digits than its factorization.

203142143323402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7017969833.

The product of its (nonzero) digits is 82944, while the sum is 34.

Adding to 203142143323402 its reverse (204323341241302), we get a palindrome (407465484564704).

The spelling of 203142143323402 in words is "two hundred three trillion, one hundred forty-two billion, one hundred forty-three million, three hundred twenty-three thousand, four hundred two".