387121 has 8 divisors (see below), whose sum is σ = 457920. Its totient is φ = 320208.

The previous prime is 387109. The next prime is 387137. The reversal of 387121 is 121783.

387121 is nontrivially palindromic in base 6.

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

It is not a de Polignac number, because 387121 - 2⁵ = 387089 is a prime.

It is a Duffinian number.

387121 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 387092 and 387101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387151) 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, 751 + ... + 1156.

It is an arithmetic number, because the mean of its divisors is an integer number (57240).

2³⁸⁷¹²¹ is an apocalyptic number.

It is an amenable number.

387121 is a deficient number, since it is larger than the sum of its proper divisors (70799).

387121 is a wasteful number, since it uses less digits than its factorization.

387121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1943.

The product of its digits is 336, while the sum is 22.

The square root of 387121 is about 622.1904853017. The cubic root of 387121 is about 72.8812104445.

The spelling of 387121 in words is "three hundred eighty-seven thousand, one hundred twenty-one".