121849056 has 96 divisors (see below), whose sum is σ = 406183680. Its totient is φ = 34812288.

The previous prime is 121849043. The next prime is 121849069. The reversal of 121849056 is 650948121.

It is an interprime number because it is at equal distance from previous prime (121849043) and next prime (121849069).

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×121849056² = 29694384896182272, which contains 22 as substring.

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 121849056.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4026 + ... + 16121.

It is an arithmetic number, because the mean of its divisors is an integer number (4231080).

Almost surely, 2^121849056 is an apocalyptic number.

121849056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121849056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203091840).

121849056 is an abundant number, since it is smaller than the sum of its proper divisors (284334624).

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

121849056 is a wasteful number, since it uses less digits than its factorization.

121849056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20173 (or 20159 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 121849056 is about 11038.5259885548. The cubic root of 121849056 is about 495.7629373559.

The spelling of 121849056 in words is "one hundred twenty-one million, eight hundred forty-nine thousand, fifty-six".