1142001009 has 24 divisors (see below), whose sum is σ = 1690877760. Its totient is φ = 742325472.

The previous prime is 1142001001. The next prime is 1142001031. The reversal of 1142001009 is 9001002411.

It is not a de Polignac number, because 1142001009 - 2³ = 1142001001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1142000982 and 1142001000.

It is not an unprimeable number, because it can be changed into a prime (1142001001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 250452 + ... + 254970.

It is an arithmetic number, because the mean of its divisors is an integer number (70453240).

Almost surely, 2^1142001009 is an apocalyptic number.

It is an amenable number.

1142001009 is a deficient number, since it is larger than the sum of its proper divisors (548876751).

1142001009 is a wasteful number, since it uses less digits than its factorization.

1142001009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5221 (or 5218 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1142001009 is about 33793.5054263389. The cubic root of 1142001009 is about 1045.2547806386.

The spelling of 1142001009 in words is "one billion, one hundred forty-two million, one thousand, nine".