120117543 has 16 divisors (see below), whose sum is σ = 197116416. Its totient is φ = 63358560.

The previous prime is 120117539. The next prime is 120117559. The reversal of 120117543 is 345711021.

It is not a de Polignac number, because 120117543 - 2² = 120117539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120117593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219723 + ... + 220268.

It is an arithmetic number, because the mean of its divisors is an integer number (12319776).

Almost surely, 2^120117543 is an apocalyptic number.

120117543 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

120117543 is a deficient number, since it is larger than the sum of its proper divisors (76998873).

120117543 is a wasteful number, since it uses less digits than its factorization.

120117543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440014.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 120117543 is about 10959.8149163204. The cubic root of 120117543 is about 493.4034100701.

Adding to 120117543 its reverse (345711021), we get a palindrome (465828564).

The spelling of 120117543 in words is "one hundred twenty million, one hundred seventeen thousand, five hundred forty-three".