1172143239 has 8 divisors (see below), whose sum is σ = 1605097200. Its totient is φ = 760309056.

The previous prime is 1172143223. The next prime is 1172143253. The reversal of 1172143239 is 9323412711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1172143239 - 2⁴ = 1172143223 is a prime.

It is a super-2 number, since 2×1172143239² = 2747839545466822242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172143339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5279814 + ... + 5280035.

It is an arithmetic number, because the mean of its divisors is an integer number (200637150).

Almost surely, 2^1172143239 is an apocalyptic number.

1172143239 is a deficient number, since it is larger than the sum of its proper divisors (432953961).

1172143239 is a wasteful number, since it uses less digits than its factorization.

1172143239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10559889.

The product of its digits is 9072, while the sum is 33.

The square root of 1172143239 is about 34236.5775012632. The cubic root of 1172143239 is about 1054.3712669249.

The spelling of 1172143239 in words is "one billion, one hundred seventy-two million, one hundred forty-three thousand, two hundred thirty-nine".