117141247 has 4 divisors (see below), whose sum is σ = 117175896. Its totient is φ = 117106600.

The previous prime is 117141197. The next prime is 117141257. The reversal of 117141247 is 742141711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 742141711 = 139 ⋅5339149.

It is a cyclic number.

It is not a de Polignac number, because 117141247 - 2¹⁹ = 116616959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117141257) 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, 11629 + ... + 19222.

It is an arithmetic number, because the mean of its divisors is an integer number (29293974).

Almost surely, 2^117141247 is an apocalyptic number.

117141247 is a deficient number, since it is larger than the sum of its proper divisors (34649).

117141247 is an equidigital number, since it uses as much as digits as its factorization.

117141247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34648.

The product of its digits is 1568, while the sum is 28.

The square root of 117141247 is about 10823.1810019051. The cubic root of 117141247 is about 489.2940646746.

Adding to 117141247 its reverse (742141711), we get a palindrome (859282958).

The spelling of 117141247 in words is "one hundred seventeen million, one hundred forty-one thousand, two hundred forty-seven".