117143845 has 16 divisors (see below), whose sum is σ = 173013120. Its totient is φ = 74147904.

The previous prime is 117143839. The next prime is 117143869. The reversal of 117143845 is 548341711.

It is a cyclic number.

It is not a de Polignac number, because 117143845 - 2¹³ = 117135653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117143845.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128275 + ... + 129184.

It is an arithmetic number, because the mean of its divisors is an integer number (10813320).

Almost surely, 2^117143845 is an apocalyptic number.

It is an amenable number.

117143845 is a deficient number, since it is larger than the sum of its proper divisors (55869275).

117143845 is a wasteful number, since it uses less digits than its factorization.

117143845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257484.

The product of its digits is 13440, while the sum is 34.

The square root of 117143845 is about 10823.3010214075. The cubic root of 117143845 is about 489.2976818935.

The spelling of 117143845 in words is "one hundred seventeen million, one hundred forty-three thousand, eight hundred forty-five".