876121 has 2 divisors, whose sum is σ = 876122. Its totient is φ = 876120.

The previous prime is 876107. The next prime is 876131. The reversal of 876121 is 121678.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 876096 + 25 = 936^2 + 5^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-876121 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is equal to p₆₉₅₄₁ and since 876121 and 69541 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (876131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 438060 + 438061.

It is an arithmetic number, because the mean of its divisors is an integer number (438061).

2⁸⁷⁶¹²¹ is an apocalyptic number.

It is an amenable number.

876121 is a deficient number, since it is larger than the sum of its proper divisors (1).

876121 is an equidigital number, since it uses as much as digits as its factorization.

876121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 25.

The square root of 876121 is about 936.0133546056. The cubic root of 876121 is about 95.6873873433.

Subtracting from 876121 its sum of digits (25), we obtain a square (876096 = 936²).

Adding to 876121 its reverse (121678), we get a palindrome (997799).

The spelling of 876121 in words is "eight hundred seventy-six thousand, one hundred twenty-one".