121686248 has 16 divisors (see below), whose sum is σ = 228318180. Its totient is φ = 60801408.

The previous prime is 121686247. The next prime is 121686329. The reversal of 121686248 is 842686121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 100360324 + 21325924 = 10018^2 + 4618^2 .

It is not an unprimeable number, because it can be changed into a prime (121686247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9686 + ... + 18362.

Almost surely, 2^121686248 is an apocalyptic number.

It is an amenable number.

121686248 is a deficient number, since it is larger than the sum of its proper divisors (106631932).

121686248 is a wasteful number, since it uses less digits than its factorization.

121686248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10436 (or 10432 counting only the distinct ones).

The product of its digits is 36864, while the sum is 38.

The square root of 121686248 is about 11031.1489882061. The cubic root of 121686248 is about 495.5420352270.

The spelling of 121686248 in words is "one hundred twenty-one million, six hundred eighty-six thousand, two hundred forty-eight".