875121 has 16 divisors (see below), whose sum is σ = 1323840. Its totient is φ = 509760.

The previous prime is 875117. The next prime is 875129. The reversal of 875121 is 121578.

It is not a de Polignac number, because 875121 - 2² = 875117 is a prime.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 875091 and 875100.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 875121.

It is not an unprimeable number, because it can be changed into a prime (875129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151 + ... + 1331.

It is an arithmetic number, because the mean of its divisors is an integer number (82740).

2⁸⁷⁵¹²¹ is an apocalyptic number.

It is an amenable number.

875121 is a deficient number, since it is larger than the sum of its proper divisors (448719).

875121 is a wasteful number, since it uses less digits than its factorization.

875121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216.

The product of its digits is 560, while the sum is 24.

The square root of 875121 is about 935.4790216782. The cubic root of 875121 is about 95.6509677863.

Adding to 875121 its reverse (121578), we get a palindrome (996699).

The spelling of 875121 in words is "eight hundred seventy-five thousand, one hundred twenty-one".