1142540012 has 24 divisors (see below), whose sum is σ = 2148665904. Its totient is φ = 529638912.

The previous prime is 1142539997. The next prime is 1142540033. The reversal of 1142540012 is 2100452411.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120833 + ... + 129944.

It is an arithmetic number, because the mean of its divisors is an integer number (89527746).

Almost surely, 2^1142540012 is an apocalyptic number.

It is an amenable number.

1142540012 is a deficient number, since it is larger than the sum of its proper divisors (1006125892).

1142540012 is a wasteful number, since it uses less digits than its factorization.

1142540012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250865 (or 250863 counting only the distinct ones).

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

The square root of 1142540012 is about 33801.4794350780. The cubic root of 1142540012 is about 1045.4192016400.

Adding to 1142540012 its reverse (2100452411), we get a palindrome (3242992423).

The spelling of 1142540012 in words is "one billion, one hundred forty-two million, five hundred forty thousand, twelve".