121736196 has 36 divisors (see below), whose sum is σ = 319121712. Its totient is φ = 40578408.

The previous prime is 121736161. The next prime is 121736207. The reversal of 121736196 is 691637121.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 121736196.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61650 + ... + 63593.

It is an arithmetic number, because the mean of its divisors is an integer number (8864492).

Almost surely, 2^121736196 is an apocalyptic number.

It is an amenable number.

121736196 is an abundant number, since it is smaller than the sum of its proper divisors (197385516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121736196 is a wasteful number, since it uses less digits than its factorization.

121736196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125262 (or 125248 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 121736196 is about 11033.4127086772. The cubic root of 121736196 is about 495.6098269132.

The spelling of 121736196 in words is "one hundred twenty-one million, seven hundred thirty-six thousand, one hundred ninety-six".