30670042 has 16 divisors (see below), whose sum is σ = 50058792. Its totient is φ = 14008320.

The previous prime is 30670019. The next prime is 30670043. The reversal of 30670042 is 24007603.

It can be written as a sum of positive squares in 4 ways, for example, as 16313521 + 14356521 = 4039^2 + 3789^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30669995 and 30670022.

It is not an unprimeable number, because it can be changed into a prime (30670043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3559 + ... + 8602.

Almost surely, 2^30670042 is an apocalyptic number.

30670042 is a deficient number, since it is larger than the sum of its proper divisors (19388750).

30670042 is a wasteful number, since it uses less digits than its factorization.

30670042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12273.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 30670042 is about 5538.0539903472. The cubic root of 30670042 is about 313.0195457790.

Adding to 30670042 its reverse (24007603), we get a palindrome (54677645).

The spelling of 30670042 in words is "thirty million, six hundred seventy thousand, forty-two".