6642443142 has 12 divisors (see below), whose sum is σ = 14391960180. Its totient is φ = 2214147708.

The previous prime is 6642443141. The next prime is 6642443153. The reversal of 6642443142 is 2413442466.

6642443142 is a `hidden beast` number, since 6 + 642 + 4 + 4 + 3 + 1 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 6642443097 and 6642443106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6642443141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 184512292 + ... + 184512327.

It is an arithmetic number, because the mean of its divisors is an integer number (1199330015).

Almost surely, 2^6642443142 is an apocalyptic number.

6642443142 is an abundant number, since it is smaller than the sum of its proper divisors (7749517038).

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

6642443142 is a wasteful number, since it uses less digits than its factorization.

6642443142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369024627 (or 369024624 counting only the distinct ones).

The product of its digits is 110592, while the sum is 36.

The square root of 6642443142 is about 81501.1849116318. The cubic root of 6642443142 is about 1879.7897703279.

The spelling of 6642443142 in words is "six billion, six hundred forty-two million, four hundred forty-three thousand, one hundred forty-two".