836121 has 16 divisors (see below), whose sum is σ = 1310400. Its totient is φ = 467520.

The previous prime is 836117. The next prime is 836131. The reversal of 836121 is 121638.

It is not a de Polignac number, because 836121 - 2² = 836117 is a prime.

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

It is a Curzon number.

836121 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 836121.

It is not an unprimeable number, because it can be changed into a prime (836131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546 + ... + 1403.

It is an arithmetic number, because the mean of its divisors is an integer number (81900).

2⁸³⁶¹²¹ is an apocalyptic number.

It is an amenable number.

836121 is a deficient number, since it is larger than the sum of its proper divisors (474279).

836121 is a wasteful number, since it uses less digits than its factorization.

836121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1976.

The product of its digits is 288, while the sum is 21.

The square root of 836121 is about 914.3965223031. The cubic root of 836121 is about 94.2084178899.

Adding to 836121 its reverse (121638), we get a palindrome (957759).

The spelling of 836121 in words is "eight hundred thirty-six thousand, one hundred twenty-one".