30542242 has 16 divisors (see below), whose sum is σ = 47256192. Its totient is φ = 14793840.

The previous prime is 30542207. The next prime is 30542243. The reversal of 30542242 is 24224503.

It is not an unprimeable number, because it can be changed into a prime (30542243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19293 + ... + 20815.

It is an arithmetic number, because the mean of its divisors is an integer number (2953512).

Almost surely, 2^30542242 is an apocalyptic number.

30542242 is a deficient number, since it is larger than the sum of its proper divisors (16713950).

30542242 is a wasteful number, since it uses less digits than its factorization.

30542242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 30542242 is about 5526.5035963075. The cubic root of 30542242 is about 312.5841633575.

Adding to 30542242 its reverse (24224503), we get a palindrome (54766745).

The spelling of 30542242 in words is "thirty million, five hundred forty-two thousand, two hundred forty-two".