121493856 has 96 divisors (see below), whose sum is σ = 351606528. Its totient is φ = 36426240.

The previous prime is 121493839. The next prime is 121493887. The reversal of 121493856 is 658394121.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108210 + ... + 109326.

It is an arithmetic number, because the mean of its divisors is an integer number (3662568).

Almost surely, 2^121493856 is an apocalyptic number.

121493856 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 121493856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175803264).

121493856 is an abundant number, since it is smaller than the sum of its proper divisors (230112672).

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

121493856 is a wasteful number, since it uses less digits than its factorization.

121493856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244 (or 1236 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 121493856 is about 11022.4251415013. The cubic root of 121493856 is about 495.2807386169.

The spelling of 121493856 in words is "one hundred twenty-one million, four hundred ninety-three thousand, eight hundred fifty-six".