203857934542 has 4 divisors (see below), whose sum is σ = 305786901816. Its totient is φ = 101928967270.

The previous prime is 203857934531. The next prime is 203857934569. The reversal of 203857934542 is 245439758302.

It is a happy number.

203857934542 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 245439758302 = 2 ⋅122719879151.

It is a self number, because there is not a number n which added to its sum of digits gives 203857934542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50964483634 + ... + 50964483637.

It is an arithmetic number, because the mean of its divisors is an integer number (76446725454).

Almost surely, 2^203857934542 is an apocalyptic number.

203857934542 is a deficient number, since it is larger than the sum of its proper divisors (101928967274).

203857934542 is a wasteful number, since it uses less digits than its factorization.

203857934542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101928967273.

The product of its (nonzero) digits is 7257600, while the sum is 52.

The spelling of 203857934542 in words is "two hundred three billion, eight hundred fifty-seven million, nine hundred thirty-four thousand, five hundred forty-two".