1142042005 has 12 divisors (see below), whose sum is σ = 1483979940. Its totient is φ = 843353472.

The previous prime is 1142041993. The next prime is 1142042051. The reversal of 1142042005 is 5002402411.

It can be written as a sum of positive squares in 6 ways, for example, as 20729809 + 1121312196 = 4553^2 + 33486^2 .

It is not a de Polignac number, because 1142042005 - 2⁵ = 1142041973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 674920 + ... + 676609.

It is an arithmetic number, because the mean of its divisors is an integer number (123664995).

Almost surely, 2^1142042005 is an apocalyptic number.

It is an amenable number.

1142042005 is a deficient number, since it is larger than the sum of its proper divisors (341937935).

1142042005 is a wasteful number, since it uses less digits than its factorization.

1142042005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351560 (or 1351547 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1142042005 is about 33794.1119871495. Note that the first 3 decimals coincide. The cubic root of 1142042005 is about 1045.2672881443.

Adding to 1142042005 its reverse (5002402411), we get a palindrome (6144444416).

The spelling of 1142042005 in words is "one billion, one hundred forty-two million, forty-two thousand, five".