30420130 has 32 divisors (see below), whose sum is σ = 61009200. Its totient is φ = 10843392.

The previous prime is 30420119. The next prime is 30420161. The reversal of 30420130 is 3102403.

It can be written as a sum of positive squares in 8 ways, for example, as 793881 + 29626249 = 891^2 + 5443^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 30420130.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265 + ... + 7804.

Almost surely, 2^30420130 is an apocalyptic number.

30420130 is an abundant number, since it is smaller than the sum of its proper divisors (30589070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30420130 is a wasteful number, since it uses less digits than its factorization.

30420130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8118.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 30420130 is about 5515.4446783555. Note that the first 3 decimals coincide. The cubic root of 30420130 is about 312.1670223956.

Adding to 30420130 its reverse (3102403), we get a palindrome (33522533).

The spelling of 30420130 in words is "thirty million, four hundred twenty thousand, one hundred thirty".