30042356 has 12 divisors (see below), whose sum is σ = 52923360. Its totient is φ = 14921400.

The previous prime is 30042343. The next prime is 30042359. The reversal of 30042356 is 65324003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30042359) 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, 24266 + ... + 25473.

It is an arithmetic number, because the mean of its divisors is an integer number (4410280).

Almost surely, 2^30042356 is an apocalyptic number.

It is an amenable number.

30042356 is a deficient number, since it is larger than the sum of its proper divisors (22881004).

30042356 is a wasteful number, since it uses less digits than its factorization.

30042356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49894 (or 49892 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 30042356 is about 5481.0907673564. The cubic root of 30042356 is about 310.8694150954.

Adding to 30042356 its reverse (65324003), we get a palindrome (95366359).

The spelling of 30042356 in words is "thirty million, forty-two thousand, three hundred fifty-six".