121131786 has 8 divisors (see below), whose sum is σ = 242263584. Its totient is φ = 40377260.

The previous prime is 121131781. The next prime is 121131797. The reversal of 121131786 is 687131121.

It is a sphenic number, since it is the product of 3 distinct primes.

121131786 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (121131781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10094310 + ... + 10094321.

It is an arithmetic number, because the mean of its divisors is an integer number (30282948).

Almost surely, 2^121131786 is an apocalyptic number.

121131786 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121131786 is a wasteful number, since it uses less digits than its factorization.

121131786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20188636.

The product of its digits is 2016, while the sum is 30.

The square root of 121131786 is about 11005.9886425527. The cubic root of 121131786 is about 494.7882453111.

The spelling of 121131786 in words is "one hundred twenty-one million, one hundred thirty-one thousand, seven hundred eighty-six".