4242021938 has 16 divisors (see below), whose sum is σ = 7933132224. Its totient is φ = 1652735760.

The previous prime is 4242021929. The next prime is 4242021941. The reversal of 4242021938 is 8391202424.

It is a junction number, because it is equal to n+sod(n) for n = 4242021898 and 4242021907.

It is an unprimeable number.

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, 13772645 + ... + 13772952.

It is an arithmetic number, because the mean of its divisors is an integer number (495820764).

Almost surely, 2^4242021938 is an apocalyptic number.

4242021938 is a deficient number, since it is larger than the sum of its proper divisors (3691110286).

4242021938 is a wasteful number, since it uses less digits than its factorization.

4242021938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27545617.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 4242021938 is about 65130.8063668799. The cubic root of 4242021938 is about 1618.7917040423.

The spelling of 4242021938 in words is "four billion, two hundred forty-two million, twenty-one thousand, nine hundred thirty-eight".