117854123 has 2 divisors, whose sum is σ = 117854124. Its totient is φ = 117854122.

The previous prime is 117854119. The next prime is 117854147. The reversal of 117854123 is 321458711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117854123 - 2² = 117854119 is a prime.

It is equal to p_6726407 and since 117854123 and 6726407 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117854123.

It is not a weakly prime, because it can be changed into another prime (117854153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58927061 + 58927062.

It is an arithmetic number, because the mean of its divisors is an integer number (58927062).

Almost surely, 2^117854123 is an apocalyptic number.

117854123 is a deficient number, since it is larger than the sum of its proper divisors (1).

117854123 is an equidigital number, since it uses as much as digits as its factorization.

117854123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 32.

The square root of 117854123 is about 10856.0638815364. The cubic root of 117854123 is about 490.2846090567.

The spelling of 117854123 in words is "one hundred seventeen million, eight hundred fifty-four thousand, one hundred twenty-three".