30542128 has 10 divisors (see below), whose sum is σ = 59175404. Its totient is φ = 15271056.

The previous prime is 30542123. The next prime is 30542147. The reversal of 30542128 is 82124503.

It is not an unprimeable number, because it can be changed into a prime (30542123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 954426 + ... + 954457.

Almost surely, 2^30542128 is an apocalyptic number.

It is an amenable number.

30542128 is a deficient number, since it is larger than the sum of its proper divisors (28633276).

30542128 is a wasteful number, since it uses less digits than its factorization.

30542128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908891 (or 1908885 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 30542128 is about 5526.4932823627. The cubic root of 30542128 is about 312.5837744466.

The spelling of 30542128 in words is "thirty million, five hundred forty-two thousand, one hundred twenty-eight".