1142845636 has 9 divisors (see below), whose sum is σ = 2000098191. Its totient is φ = 571389012.

The previous prime is 1142845579. The next prime is 1142845637. The reversal of 1142845636 is 6365482411.

It is a happy number.

The square root of 1142845636 is 33806.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×1142845636² = 2612192295448488992, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142845637) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 59161 + ... + 76063.

Almost surely, 2^1142845636 is an apocalyptic number.

1142845636 is the 33806-th square number.

It is an amenable number.

1142845636 is a deficient number, since it is larger than the sum of its proper divisors (857252555).

1142845636 is an frugal number, since it uses more digits than its factorization.

1142845636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33810 (or 16905 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The cubic root of 1142845636 is about 1045.5124082120.

The spelling of 1142845636 in words is "one billion, one hundred forty-two million, eight hundred forty-five thousand, six hundred thirty-six".