203421313142 has 4 divisors (see below), whose sum is σ = 305131969716. Its totient is φ = 101710656570.

The previous prime is 203421313097. The next prime is 203421313169. The reversal of 203421313142 is 241313124302.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 50855328284 + ... + 50855328287.

It is an arithmetic number, because the mean of its divisors is an integer number (76282992429).

Almost surely, 2^203421313142 is an apocalyptic number.

203421313142 is a deficient number, since it is larger than the sum of its proper divisors (101710656574).

203421313142 is a wasteful number, since it uses less digits than its factorization.

203421313142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101710656573.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 203421313142 its reverse (241313124302), we get a palindrome (444734437444).

The spelling of 203421313142 in words is "two hundred three billion, four hundred twenty-one million, three hundred thirteen thousand, one hundred forty-two".