203245042542 has 32 divisors (see below), whose sum is σ = 407063232000. Its totient is φ = 67652896128.

The previous prime is 203245042513. The next prime is 203245042577. The reversal of 203245042542 is 245240542302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13277209 + ... + 13292507.

It is an arithmetic number, because the mean of its divisors is an integer number (12720726000).

Almost surely, 2^203245042542 is an apocalyptic number.

203245042542 is an abundant number, since it is smaller than the sum of its proper divisors (203818189458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203245042542 is a wasteful number, since it uses less digits than its factorization.

203245042542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18280.

The product of its (nonzero) digits is 76800, while the sum is 33.

Adding to 203245042542 its reverse (245240542302), we get a palindrome (448485584844).

The spelling of 203245042542 in words is "two hundred three billion, two hundred forty-five million, forty-two thousand, five hundred forty-two".