30420203 has 4 divisors (see below), whose sum is σ = 33185688. Its totient is φ = 27654720.

The previous prime is 30420167. The next prime is 30420209. The reversal of 30420203 is 30202403.

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

It is a cyclic number.

It is not a de Polignac number, because 30420203 - 2²⁴ = 13642987 is a prime.

It is a super-2 number, since 2×30420203² = 1850777501122418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30420209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1382726 + ... + 1382747.

It is an arithmetic number, because the mean of its divisors is an integer number (8296422).

Almost surely, 2^30420203 is an apocalyptic number.

30420203 is a deficient number, since it is larger than the sum of its proper divisors (2765485).

30420203 is a wasteful number, since it uses less digits than its factorization.

30420203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765484.

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

The square root of 30420203 is about 5515.4512961316. The cubic root of 30420203 is about 312.1672721006.

Adding to 30420203 its reverse (30202403), we get a palindrome (60622606).

The spelling of 30420203 in words is "thirty million, four hundred twenty thousand, two hundred three".