830121 has 4 divisors (see below), whose sum is σ = 1106832. Its totient is φ = 553412.

The previous prime is 830117. The next prime is 830131. The reversal of 830121 is 121038.

It is a happy number.

830121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 830121 - 2² = 830117 is a prime.

It is a D-number.

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

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 830121.

It is not an unprimeable number, because it can be changed into a prime (830111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138351 + ... + 138356.

It is an arithmetic number, because the mean of its divisors is an integer number (276708).

2⁸³⁰¹²¹ is an apocalyptic number.

It is an amenable number.

830121 is a deficient number, since it is larger than the sum of its proper divisors (276711).

830121 is a wasteful number, since it uses less digits than its factorization.

830121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276710.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 830121 is about 911.1097628716. The cubic root of 830121 is about 93.9825303283.

Adding to 830121 its reverse (121038), we get a palindrome (951159).

The spelling of 830121 in words is "eight hundred thirty thousand, one hundred twenty-one".