203122400242 has 16 divisors (see below), whose sum is σ = 315230535000. Its totient is φ = 98046457600.

The previous prime is 203122400227. The next prime is 203122400251. The reversal of 203122400242 is 242004221302.

It can be written as a sum of positive squares in 4 ways, for example, as 202392914161 + 729486081 = 449881^2 + 27009^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236634 + ... + 679882.

Almost surely, 2^203122400242 is an apocalyptic number.

203122400242 is a deficient number, since it is larger than the sum of its proper divisors (112108134758).

203122400242 is a wasteful number, since it uses less digits than its factorization.

203122400242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451181.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 203122400242 its reverse (242004221302), we get a palindrome (445126621544).

The spelling of 203122400242 in words is "two hundred three billion, one hundred twenty-two million, four hundred thousand, two hundred forty-two".