203442434 has 32 divisors (see below), whose sum is σ = 349090560. Its totient is φ = 88088832.

The previous prime is 203442433. The next prime is 203442457. The reversal of 203442434 is 434244302.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (203442431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195287 + ... + 196325.

It is an arithmetic number, because the mean of its divisors is an integer number (10909080).

Almost surely, 2^203442434 is an apocalyptic number.

203442434 is a deficient number, since it is larger than the sum of its proper divisors (145648126).

203442434 is a wasteful number, since it uses less digits than its factorization.

203442434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514.

The product of its (nonzero) digits is 9216, while the sum is 26.

The square root of 203442434 is about 14263.3247877204. The cubic root of 203442434 is about 588.1397253058.

Adding to 203442434 its reverse (434244302), we get a palindrome (637686736).

The spelling of 203442434 in words is "two hundred three million, four hundred forty-two thousand, four hundred thirty-four".