203420030 has 16 divisors (see below), whose sum is σ = 399443184. Its totient is φ = 73970880.

The previous prime is 203420017. The next prime is 203420039. The reversal of 203420030 is 30024302.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 203419987 and 203420014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203420039) 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, 924527 + ... + 924746.

It is an arithmetic number, because the mean of its divisors is an integer number (24965199).

Almost surely, 2^203420030 is an apocalyptic number.

203420030 is a deficient number, since it is larger than the sum of its proper divisors (196023154).

203420030 is a wasteful number, since it uses less digits than its factorization.

203420030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849291.

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 203420030 is about 14262.5393952129. The cubic root of 203420030 is about 588.1181349787.

Adding to 203420030 its reverse (30024302), we get a palindrome (233444332).

The spelling of 203420030 in words is "two hundred three million, four hundred twenty thousand, thirty".