117206147 has 4 divisors (see below), whose sum is σ = 118523160. Its totient is φ = 115889136.

The previous prime is 117206123. The next prime is 117206149. The reversal of 117206147 is 741602711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 741602711 = 41 ⋅18087871.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117206147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117206149) 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, 658373 + ... + 658550.

It is an arithmetic number, because the mean of its divisors is an integer number (29630790).

Almost surely, 2^117206147 is an apocalyptic number.

117206147 is a deficient number, since it is larger than the sum of its proper divisors (1317013).

117206147 is an equidigital number, since it uses as much as digits as its factorization.

117206147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317012.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 117206147 is about 10826.1787810843. The cubic root of 117206147 is about 489.3844095160.

Adding to 117206147 its reverse (741602711), we get a palindrome (858808858).

The spelling of 117206147 in words is "one hundred seventeen million, two hundred six thousand, one hundred forty-seven".