118861247 has 2 divisors, whose sum is σ = 118861248. Its totient is φ = 118861246.

The previous prime is 118861231. The next prime is 118861277. The reversal of 118861247 is 742168811.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 118861247 - 2⁴ = 118861231 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118861247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118861277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59430623 + 59430624.

It is an arithmetic number, because the mean of its divisors is an integer number (59430624).

Almost surely, 2^118861247 is an apocalyptic number.

118861247 is a deficient number, since it is larger than the sum of its proper divisors (1).

118861247 is an equidigital number, since it uses as much as digits as its factorization.

118861247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 38.

The square root of 118861247 is about 10902.3505263773. The cubic root of 118861247 is about 491.6772275940.

The spelling of 118861247 in words is "one hundred eighteen million, eight hundred sixty-one thousand, two hundred forty-seven".