203243212442 has 4 divisors (see below), whose sum is σ = 304864818666. Its totient is φ = 101621606220.

The previous prime is 203243212433. The next prime is 203243212451. The reversal of 203243212442 is 244212342302.

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

It is an interprime number because it is at equal distance from previous prime (203243212433) and next prime (203243212451).

It can be written as a sum of positive squares in only one way, i.e., 114014950921 + 89228261521 = 337661^2 + 298711^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50810803109 + ... + 50810803112.

Almost surely, 2^203243212442 is an apocalyptic number.

203243212442 is a deficient number, since it is larger than the sum of its proper divisors (101621606224).

203243212442 is a wasteful number, since it uses less digits than its factorization.

203243212442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101621606223.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 203243212442 its reverse (244212342302), we get a palindrome (447455554744).

The spelling of 203243212442 in words is "two hundred three billion, two hundred forty-three million, two hundred twelve thousand, four hundred forty-two".