121845726 has 24 divisors (see below), whose sum is σ = 264214704. Its totient is φ = 40582080.

The previous prime is 121845721. The next prime is 121845739. The reversal of 121845726 is 627548121.

121845726 is a `hidden beast` number, since 1 + 2 + 1 + 84 + 572 + 6 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121845721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31110 + ... + 34806.

It is an arithmetic number, because the mean of its divisors is an integer number (11008946).

Almost surely, 2^121845726 is an apocalyptic number.

121845726 is an abundant number, since it is smaller than the sum of its proper divisors (142368978).

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

121845726 is a wasteful number, since it uses less digits than its factorization.

121845726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5536 (or 5533 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 121845726 is about 11038.3751521680. The cubic root of 121845726 is about 495.7584210971.

The spelling of 121845726 in words is "one hundred twenty-one million, eight hundred forty-five thousand, seven hundred twenty-six".