30042020 has 12 divisors (see below), whose sum is σ = 63088284. Its totient is φ = 12016800.

The previous prime is 30042013. The next prime is 30042031. The reversal of 30042020 is 2024003.

It can be written as a sum of positive squares in 2 ways, for example, as 6635776 + 23406244 = 2576^2 + 4838^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30041992 and 30042010.

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 3 ways as a sum of consecutive naturals, for example, 751031 + ... + 751070.

It is an arithmetic number, because the mean of its divisors is an integer number (5257357).

Almost surely, 2^30042020 is an apocalyptic number.

It is an amenable number.

30042020 is an abundant number, since it is smaller than the sum of its proper divisors (33046264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30042020 is a wasteful number, since it uses less digits than its factorization.

30042020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502110 (or 1502108 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 30042020 is about 5481.0601164373. The cubic root of 30042020 is about 310.8682561482.

Adding to 30042020 its reverse (2024003), we get a palindrome (32066023).

The spelling of 30042020 in words is "thirty million, forty-two thousand, twenty".