30042530 has 32 divisors (see below), whose sum is σ = 62204544. Its totient is φ = 10233216.

The previous prime is 30042527. The next prime is 30042533. The reversal of 30042530 is 3524003.

It is an interprime number because it is at equal distance from previous prime (30042527) and next prime (30042533).

It is a junction number, because it is equal to n+sod(n) for n = 30042499 and 30042508.

It is not an unprimeable number, because it can be changed into a prime (30042533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10094 + ... + 12726.

It is an arithmetic number, because the mean of its divisors is an integer number (1943892).

Almost surely, 2^30042530 is an apocalyptic number.

30042530 is an abundant number, since it is smaller than the sum of its proper divisors (32162014).

30042530 is a wasteful number, since it uses less digits than its factorization.

30042530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2810.

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 30042530 is about 5481.1066400865. The cubic root of 30042530 is about 310.8700152611.

Adding to 30042530 its reverse (3524003), we get a palindrome (33566533).

The spelling of 30042530 in words is "thirty million, forty-two thousand, five hundred thirty".