121757696 has 56 divisors (see below), whose sum is σ = 247710960. Its totient is φ = 59834368.

The previous prime is 121757663. The next prime is 121757707. The reversal of 121757696 is 696757121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 729005 + ... + 729171.

It is an arithmetic number, because the mean of its divisors is an integer number (4423410).

Almost surely, 2^121757696 is an apocalyptic number.

121757696 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 121757696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123855480).

121757696 is an abundant number, since it is smaller than the sum of its proper divisors (125953264).

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

121757696 is an frugal number, since it uses more digits than its factorization.

121757696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282 (or 258 counting only the distinct ones).

The product of its digits is 158760, while the sum is 44.

The square root of 121757696 is about 11034.3869788947. The cubic root of 121757696 is about 495.6390019775.

The spelling of 121757696 in words is "one hundred twenty-one million, seven hundred fifty-seven thousand, six hundred ninety-six".