1005142142 has 16 divisors (see below), whose sum is σ = 1625778000. Its totient is φ = 464506560.

The previous prime is 1005142139. The next prime is 1005142147. The reversal of 1005142142 is 2412415001.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005142147) 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 7 ways as a sum of consecutive naturals, for example, 321017 + ... + 324132.

It is an arithmetic number, because the mean of its divisors is an integer number (101611125).

Almost surely, 2^1005142142 is an apocalyptic number.

1005142142 is a deficient number, since it is larger than the sum of its proper divisors (620635858).

1005142142 is a wasteful number, since it uses less digits than its factorization.

1005142142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645211.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1005142142 is about 31703.9767537134. The cubic root of 1005142142 is about 1001.7111177394.

Adding to 1005142142 its reverse (2412415001), we get a palindrome (3417557143).

The spelling of 1005142142 in words is "one billion, five million, one hundred forty-two thousand, one hundred forty-two".