30312042 has 16 divisors (see below), whose sum is σ = 61027392. Its totient is φ = 10036800.

The previous prime is 30312013. The next prime is 30312053. The reversal of 30312042 is 24021303.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15823 + ... + 17634.

It is an arithmetic number, because the mean of its divisors is an integer number (3814212).

Almost surely, 2^30312042 is an apocalyptic number.

30312042 is an abundant number, since it is smaller than the sum of its proper divisors (30715350).

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

30312042 is a wasteful number, since it uses less digits than its factorization.

30312042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33613.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 30312042 is about 5505.6372928118. The cubic root of 30312042 is about 311.7968557621.

Adding to 30312042 its reverse (24021303), we get a palindrome (54333345).

The spelling of 30312042 in words is "thirty million, three hundred twelve thousand, forty-two".