203402434 has 4 divisors (see below), whose sum is σ = 305103654. Its totient is φ = 101701216.

The previous prime is 203402413. The next prime is 203402461. The reversal of 203402434 is 434204302.

203402434 is digitally balanced in base 2, 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.

It can be written as a sum of positive squares in only one way, i.e., 104101209 + 99301225 = 10203^2 + 9965^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50850607 + ... + 50850610.

Almost surely, 2^203402434 is an apocalyptic number.

203402434 is a deficient number, since it is larger than the sum of its proper divisors (101701220).

203402434 is a wasteful number, since it uses less digits than its factorization.

203402434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101701219.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 203402434 is about 14261.9225211750. The cubic root of 203402434 is about 588.1011769221.

Adding to 203402434 its reverse (434204302), we get a palindrome (637606736).

The spelling of 203402434 in words is "two hundred three million, four hundred two thousand, four hundred thirty-four".