121776246 has 48 divisors (see below), whose sum is σ = 273836160. Its totient is φ = 39070080.

The previous prime is 121776241. The next prime is 121776247. The reversal of 121776246 is 642677121.

121776246 is a `hidden beast` number, since 1 + 21 + 7 + 7 + 624 + 6 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121776246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121776241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127306 + ... + 128258.

It is an arithmetic number, because the mean of its divisors is an integer number (5704920).

Almost surely, 2^121776246 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121776246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136918080).

121776246 is an abundant number, since it is smaller than the sum of its proper divisors (152059914).

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

121776246 is a wasteful number, since it uses less digits than its factorization.

121776246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221 (or 1218 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 121776246 is about 11035.2275010532. The cubic root of 121776246 is about 495.6641711918.

The spelling of 121776246 in words is "one hundred twenty-one million, seven hundred seventy-six thousand, two hundred forty-six".