203040342 has 24 divisors (see below), whose sum is σ = 440305320. Its totient is φ = 67620960.

The previous prime is 203040317. The next prime is 203040347. The reversal of 203040342 is 243040302.

203040342 is a `hidden beast` number, since 20 + 304 + 0 + 342 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203040347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19509 + ... + 28047.

It is an arithmetic number, because the mean of its divisors is an integer number (18346055).

Almost surely, 2^203040342 is an apocalyptic number.

203040342 is an abundant number, since it is smaller than the sum of its proper divisors (237264978).

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

203040342 is a wasteful number, since it uses less digits than its factorization.

203040342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9868 (or 9865 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 203040342 is about 14249.2225051053. Note that the first 3 decimals coincide. The cubic root of 203040342 is about 587.7519952316.

Adding to 203040342 its reverse (243040302), we get a palindrome (446080644).

It can be divided in two parts, 20304034 and 2, that added together give a square (20304036 = 4506²).

The spelling of 203040342 in words is "two hundred three million, forty thousand, three hundred forty-two".