121585736 has 16 divisors (see below), whose sum is σ = 229770240. Its totient is φ = 60313680.

The previous prime is 121585729. The next prime is 121585741. The reversal of 121585736 is 637585121.

It is a self number, because there is not a number n which added to its sum of digits gives 121585736.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58820 + ... + 60851.

It is an arithmetic number, because the mean of its divisors is an integer number (14360640).

Almost surely, 2^121585736 is an apocalyptic number.

It is an amenable number.

121585736 is a deficient number, since it is larger than the sum of its proper divisors (108184504).

121585736 is a wasteful number, since it uses less digits than its factorization.

121585736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119804 (or 119800 counting only the distinct ones).

The product of its digits is 50400, while the sum is 38.

The square root of 121585736 is about 11026.5922206274. The cubic root of 121585736 is about 495.4055595452.

The spelling of 121585736 in words is "one hundred twenty-one million, five hundred eighty-five thousand, seven hundred thirty-six".