203040406 has 4 divisors (see below), whose sum is σ = 304560612. Its totient is φ = 101520202.

The previous prime is 203040379. The next prime is 203040413. The reversal of 203040406 is 604040302.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50760100 + ... + 50760103.

It is an arithmetic number, because the mean of its divisors is an integer number (76140153).

Almost surely, 2^203040406 is an apocalyptic number.

203040406 is a deficient number, since it is larger than the sum of its proper divisors (101520206).

203040406 is a wasteful number, since it uses less digits than its factorization.

203040406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101520205.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 203040406 is about 14249.2247508417. The cubic root of 203040406 is about 587.7520569863.

Adding to 203040406 its reverse (604040302), we get a palindrome (807080708).

It can be divided in two parts, 2030 and 40406, that added together give a square (42436 = 206²).

The spelling of 203040406 in words is "two hundred three million, forty thousand, four hundred six".