203555425242 has 32 divisors (see below), whose sum is σ = 440056955520. Its totient is φ = 62399597760.

The previous prime is 203555425237. The next prime is 203555425277. The reversal of 203555425242 is 242524555302.

It is a super-2 number, since 2×203555425242² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 203555425242.

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, 4829734 + ... + 4871697.

It is an arithmetic number, because the mean of its divisors is an integer number (13751779860).

Almost surely, 2^203555425242 is an apocalyptic number.

203555425242 is an abundant number, since it is smaller than the sum of its proper divisors (236501530278).

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

203555425242 is a wasteful number, since it uses less digits than its factorization.

203555425242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9701718.

The product of its (nonzero) digits is 480000, while the sum is 39.

The spelling of 203555425242 in words is "two hundred three billion, five hundred fifty-five million, four hundred twenty-five thousand, two hundred forty-two".