30420505 has 8 divisors (see below), whose sum is σ = 36590400. Its totient is φ = 24279216.

The previous prime is 30420491. The next prime is 30420521. The reversal of 30420505 is 50502403.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 30420505 - 2⁵ = 30420473 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4735 + ... + 9124.

It is an arithmetic number, because the mean of its divisors is an integer number (4573800).

Almost surely, 2^30420505 is an apocalyptic number.

It is an amenable number.

30420505 is a deficient number, since it is larger than the sum of its proper divisors (6169895).

30420505 is a wasteful number, since it uses less digits than its factorization.

30420505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14303.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 30420505 is about 5515.4786736964. The cubic root of 30420505 is about 312.1683051225.

Adding to 30420505 its reverse (50502403), we get a palindrome (80922908).

The spelling of 30420505 in words is "thirty million, four hundred twenty thousand, five hundred five".