30220042 has 8 divisors (see below), whose sum is σ = 45731556. Its totient is φ = 14976192.

The previous prime is 30220007. The next prime is 30220049. The reversal of 30220042 is 24002203.

It can be written as a sum of positive squares in 2 ways, for example, as 19793601 + 10426441 = 4449^2 + 3229^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (30220049) 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 3 ways as a sum of consecutive naturals, for example, 66633 + ... + 67084.

Almost surely, 2^30220042 is an apocalyptic number.

30220042 is a deficient number, since it is larger than the sum of its proper divisors (15511514).

30220042 is a wasteful number, since it uses less digits than its factorization.

30220042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133832.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 30220042 is about 5497.2758708291. The cubic root of 30220042 is about 311.4810914787.

Adding to 30220042 its reverse (24002203), we get a palindrome (54222245).

The spelling of 30220042 in words is "thirty million, two hundred twenty thousand, forty-two".