30180042 has 24 divisors (see below), whose sum is σ = 65894400. Its totient is φ = 9982440.

The previous prime is 30180001. The next prime is 30180047. The reversal of 30180042 is 24008103.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 30179997 and 30180024.

It is not an unprimeable number, because it can be changed into a prime (30180047) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4042 + ... + 8757.

It is an arithmetic number, because the mean of its divisors is an integer number (2745600).

Almost surely, 2^30180042 is an apocalyptic number.

30180042 is an abundant number, since it is smaller than the sum of its proper divisors (35714358).

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

30180042 is a wasteful number, since it uses less digits than its factorization.

30180042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12938 (or 12935 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 30180042 is about 5493.6365005340. The cubic root of 30180042 is about 311.3436027570.

Adding to 30180042 its reverse (24008103), we get a palindrome (54188145).

The spelling of 30180042 in words is "thirty million, one hundred eighty thousand, forty-two".