121937886 has 96 divisors (see below), whose sum is σ = 318060288. Its totient is φ = 34292160.

The previous prime is 121937867. The next prime is 121937887. The reversal of 121937886 is 688739121.

Its product of digits (145152) is a multiple of the sum of its prime divisors (576).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121937887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 248101 + ... + 248591.

It is an arithmetic number, because the mean of its divisors is an integer number (3313128).

Almost surely, 2^121937886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121937886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159030144).

121937886 is an abundant number, since it is smaller than the sum of its proper divisors (196122402).

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

121937886 is an equidigital number, since it uses as much as digits as its factorization.

121937886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588 (or 576 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 121937886 is about 11042.5488905415. The cubic root of 121937886 is about 495.8833812501.

The spelling of 121937886 in words is "one hundred twenty-one million, nine hundred thirty-seven thousand, eight hundred eighty-six".