1071140872 has 8 divisors (see below), whose sum is σ = 2008389150. Its totient is φ = 535570432.

The previous prime is 1071140831. The next prime is 1071140881. The reversal of 1071140872 is 2780411701.

It can be written as a sum of positive squares in only one way, i.e., 1022336676 + 48804196 = 31974^2 + 6986^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1071140872² = 2294685535337840768, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66946297 + ... + 66946312.

Almost surely, 2^1071140872 is an apocalyptic number.

It is an amenable number.

1071140872 is a deficient number, since it is larger than the sum of its proper divisors (937248278).

1071140872 is a wasteful number, since it uses less digits than its factorization.

1071140872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133892615 (or 133892611 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 31.

The square root of 1071140872 is about 32728.2885589821. The cubic root of 1071140872 is about 1023.1725111173.

The spelling of 1071140872 in words is "one billion, seventy-one million, one hundred forty thousand, eight hundred seventy-two".