203240642 has 16 divisors (see below), whose sum is σ = 344044800. Its totient is φ = 89196240.

The previous prime is 203240641. The next prime is 203240647. The reversal of 203240642 is 246042302.

203240642 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (203240641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158642 + ... + 159917.

It is an arithmetic number, because the mean of its divisors is an integer number (21502800).

Almost surely, 2^203240642 is an apocalyptic number.

203240642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

203240642 is a deficient number, since it is larger than the sum of its proper divisors (140804158).

203240642 is a wasteful number, since it uses less digits than its factorization.

203240642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318601.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 203240642 is about 14256.2492262166. The cubic root of 203240642 is about 587.9452048372.

Adding to 203240642 its reverse (246042302), we get a palindrome (449282944).

The spelling of 203240642 in words is "two hundred three million, two hundred forty thousand, six hundred forty-two".