121308387 has 8 divisors (see below), whose sum is σ = 162092736. Its totient is φ = 80698152.

The previous prime is 121308377. The next prime is 121308403. The reversal of 121308387 is 783803121.

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

It is not a de Polignac number, because 121308387 - 2¹⁶ = 121242851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121308347) 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, 41893 + ... + 44694.

It is an arithmetic number, because the mean of its divisors is an integer number (20261592).

Almost surely, 2^121308387 is an apocalyptic number.

121308387 is a deficient number, since it is larger than the sum of its proper divisors (40784349).

121308387 is an equidigital number, since it uses as much as digits as its factorization.

121308387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87057.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 121308387 is about 11014.0086707792. The cubic root of 121308387 is about 495.0285831877.

The spelling of 121308387 in words is "one hundred twenty-one million, three hundred eight thousand, three hundred eighty-seven".