7838972042 has 32 divisors (see below), whose sum is σ = 12956557824. Its totient is φ = 3527372800.

The previous prime is 7838972041. The next prime is 7838972059. The reversal of 7838972042 is 2402798387.

It is a super-2 number, since 2×7838972042² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7838972041) 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 15 ways as a sum of consecutive naturals, for example, 3024167 + ... + 3026757.

It is an arithmetic number, because the mean of its divisors is an integer number (404892432).

Almost surely, 2^7838972042 is an apocalyptic number.

7838972042 is a deficient number, since it is larger than the sum of its proper divisors (5117585782).

7838972042 is a wasteful number, since it uses less digits than its factorization.

7838972042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3934.

The product of its (nonzero) digits is 1354752, while the sum is 50.

The square root of 7838972042 is about 88537.9694933196. The cubic root of 7838972042 is about 1986.4899482403.

The spelling of 7838972042 in words is "seven billion, eight hundred thirty-eight million, nine hundred seventy-two thousand, forty-two".