203422406 has 8 divisors (see below), whose sum is σ = 332873064. Its totient is φ = 92464720.

The previous prime is 203422309. The next prime is 203422421. The reversal of 203422406 is 604224302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4623215 + ... + 4623258.

It is an arithmetic number, because the mean of its divisors is an integer number (41609133).

Almost surely, 2^203422406 is an apocalyptic number.

203422406 is a deficient number, since it is larger than the sum of its proper divisors (129450658).

203422406 is a wasteful number, since it uses less digits than its factorization.

203422406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9246486.

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

The square root of 203422406 is about 14262.6226900946. The cubic root of 203422406 is about 588.1204247618.

Adding to 203422406 its reverse (604224302), we get a palindrome (807646708).

The spelling of 203422406 in words is "two hundred three million, four hundred twenty-two thousand, four hundred six".