30042342 has 24 divisors (see below), whose sum is σ = 71009640. Its totient is φ = 9103680.

The previous prime is 30042323. The next prime is 30042343. The reversal of 30042342 is 24324003.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30042343) 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 11 ways as a sum of consecutive naturals, for example, 75667 + ... + 76062.

It is an arithmetic number, because the mean of its divisors is an integer number (2958735).

Almost surely, 2^30042342 is an apocalyptic number.

30042342 is an abundant number, since it is smaller than the sum of its proper divisors (40967298).

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

30042342 is a wasteful number, since it uses less digits than its factorization.

30042342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151748 (or 151745 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 30042342 is about 5481.0894902382. The cubic root of 30042342 is about 310.8693668061.

Adding to 30042342 its reverse (24324003), we get a palindrome (54366345).

The spelling of 30042342 in words is "thirty million, forty-two thousand, three hundred forty-two".