117782141 has 4 divisors (see below), whose sum is σ = 120288192. Its totient is φ = 115276092.

The previous prime is 117782131. The next prime is 117782201. The reversal of 117782141 is 141287711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 141287711 = 509 ⋅277579.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117782141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 117782098 and 117782107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117782101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1252955 + ... + 1253048.

It is an arithmetic number, because the mean of its divisors is an integer number (30072048).

Almost surely, 2^117782141 is an apocalyptic number.

It is an amenable number.

117782141 is a deficient number, since it is larger than the sum of its proper divisors (2506051).

117782141 is an equidigital number, since it uses as much as digits as its factorization.

117782141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2506050.

The product of its digits is 3136, while the sum is 32.

The square root of 117782141 is about 10852.7480851626. The cubic root of 117782141 is about 490.1847713553.

The spelling of 117782141 in words is "one hundred seventeen million, seven hundred eighty-two thousand, one hundred forty-one".