121869846 has 56 divisors (see below), whose sum is σ = 313262544. Its totient is φ = 34817040.

The previous prime is 121869841. The next prime is 121869859. The reversal of 121869846 is 648968121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121869841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 4236 + ... + 16176.

It is an arithmetic number, because the mean of its divisors is an integer number (5593974).

Almost surely, 2^121869846 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121869846, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156631272).

121869846 is an abundant number, since it is smaller than the sum of its proper divisors (191392698).

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

121869846 is an equidigital number, since it uses as much as digits as its factorization.

121869846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11968 (or 11953 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 121869846 is about 11039.4676502085. The cubic root of 121869846 is about 495.7911315980.

The spelling of 121869846 in words is "one hundred twenty-one million, eight hundred sixty-nine thousand, eight hundred forty-six".