121945896 has 96 divisors (see below), whose sum is σ = 355155840. Its totient is φ = 37661184.

The previous prime is 121945883. The next prime is 121945919. The reversal of 121945896 is 698549121.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81265 + ... + 82751.

It is an arithmetic number, because the mean of its divisors is an integer number (3699540).

Almost surely, 2^121945896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121945896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177577920).

121945896 is an abundant number, since it is smaller than the sum of its proper divisors (233209944).

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

121945896 is a wasteful number, since it uses less digits than its factorization.

121945896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583 (or 1576 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 121945896 is about 11042.9115725881. The cubic root of 121945896 is about 495.8942390703.

The spelling of 121945896 in words is "one hundred twenty-one million, nine hundred forty-five thousand, eight hundred ninety-six".