121386765 has 8 divisors (see below), whose sum is σ = 194218848. Its totient is φ = 64739600.

The previous prime is 121386761. The next prime is 121386791. The reversal of 121386765 is 567683121.

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

It is not a de Polignac number, because 121386765 - 2² = 121386761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121386761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4046211 + ... + 4046240.

It is an arithmetic number, because the mean of its divisors is an integer number (24277356).

Almost surely, 2^121386765 is an apocalyptic number.

121386765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121386765 is a deficient number, since it is larger than the sum of its proper divisors (72832083).

121386765 is an equidigital number, since it uses as much as digits as its factorization.

121386765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8092459.

The product of its digits is 60480, while the sum is 39.

The square root of 121386765 is about 11017.5662012987. The cubic root of 121386765 is about 495.1351737764.

It can be divided in two parts, 1213 and 86765, that added together give a palindrome (87978).

The spelling of 121386765 in words is "one hundred twenty-one million, three hundred eighty-six thousand, seven hundred sixty-five".