117561123 has 6 divisors (see below), whose sum is σ = 169810524. Its totient is φ = 78374076.

The previous prime is 117561109. The next prime is 117561131. The reversal of 117561123 is 321165711.

It is not a de Polignac number, because 117561123 - 2⁴ = 117561107 is a prime.

It is a super-2 number, since 2×117561123² = 27641235282042258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (117561163) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 6531165 + ... + 6531182.

It is an arithmetic number, because the mean of its divisors is an integer number (28301754).

Almost surely, 2^117561123 is an apocalyptic number.

117561123 is a deficient number, since it is larger than the sum of its proper divisors (52249401).

117561123 is a wasteful number, since it uses less digits than its factorization.

117561123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13062353 (or 13062350 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 117561123 is about 10842.5607215270. The cubic root of 117561123 is about 489.8779690563.

The spelling of 117561123 in words is "one hundred seventeen million, five hundred sixty-one thousand, one hundred twenty-three".