118121503 has 2 divisors, whose sum is σ = 118121504. Its totient is φ = 118121502.

The previous prime is 118121489. The next prime is 118121543. The reversal of 118121503 is 305121811.

It is a weak prime.

It is an emirp because it is prime and its reverse (305121811) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118121503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118121543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59060751 + 59060752.

It is an arithmetic number, because the mean of its divisors is an integer number (59060752).

Almost surely, 2^118121503 is an apocalyptic number.

118121503 is a deficient number, since it is larger than the sum of its proper divisors (1).

118121503 is an equidigital number, since it uses as much as digits as its factorization.

118121503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 118121503 is about 10868.3716811673. The cubic root of 118121503 is about 490.6551046101.

The spelling of 118121503 in words is "one hundred eighteen million, one hundred twenty-one thousand, five hundred three".