6442157142 has 12 divisors (see below), whose sum is σ = 13958007180. Its totient is φ = 2147385708.

The previous prime is 6442157107. The next prime is 6442157143. The reversal of 6442157142 is 2417512446.

6442157142 is a `hidden beast` number, since 6 + 4 + 42 + 1 + 571 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 6442157097 and 6442157106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442157143) 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, 178948792 + ... + 178948827.

It is an arithmetic number, because the mean of its divisors is an integer number (1163167265).

Almost surely, 2^6442157142 is an apocalyptic number.

6442157142 is an abundant number, since it is smaller than the sum of its proper divisors (7515850038).

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

6442157142 is a wasteful number, since it uses less digits than its factorization.

6442157142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357897627 (or 357897624 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 6442157142 is about 80263.0496679512. The cubic root of 6442157142 is about 1860.7032009856.

Adding to 6442157142 its reverse (2417512446), we get a palindrome (8859669588).

The spelling of 6442157142 in words is "six billion, four hundred forty-two million, one hundred fifty-seven thousand, one hundred forty-two".