30070042 has 16 divisors (see below), whose sum is σ = 49406760. Its totient is φ = 13662208.

The previous prime is 30070021. The next prime is 30070043. The reversal of 30070042 is 24007003.

It can be written as a sum of positive squares in 4 ways, for example, as 29800681 + 269361 = 5459^2 + 519^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30069998 and 30070025.

It is not an unprimeable number, because it can be changed into a prime (30070043) 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 7 ways as a sum of consecutive naturals, for example, 14263 + ... + 16234.

Almost surely, 2^30070042 is an apocalyptic number.

30070042 is a deficient number, since it is larger than the sum of its proper divisors (19336718).

30070042 is a wasteful number, since it uses less digits than its factorization.

30070042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30545.

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 30070042 is about 5483.6157779334. The cubic root of 30070042 is about 310.9648812886.

Adding to 30070042 its reverse (24007003), we get a palindrome (54077045).

The spelling of 30070042 in words is "thirty million, seventy thousand, forty-two".