30019442 has 16 divisors (see below), whose sum is σ = 46002264. Its totient is φ = 14688000.

The previous prime is 30019387. The next prime is 30019471. The reversal of 30019442 is 24491003.

It is a Cunningham number, because it is equal to 5479²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 22572001 + 7447441 = 4751^2 + 2729^2 .

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, 28892 + ... + 29912.

Almost surely, 2^30019442 is an apocalyptic number.

30019442 is a deficient number, since it is larger than the sum of its proper divisors (15982822).

30019442 is a wasteful number, since it uses less digits than its factorization.

30019442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 30019442 is about 5479.0000912575. Note that the first 4 decimals coincide. The cubic root of 30019442 is about 310.7903592276.

The spelling of 30019442 in words is "thirty million, nineteen thousand, four hundred forty-two".