292121 has 4 divisors (see below), whose sum is σ = 293412. Its totient is φ = 290832.

The previous prime is 292093. The next prime is 292133. The reversal of 292121 is 121292.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 265225 + 26896 = 515^2 + 164^2 .

It is a cyclic number.

It is not a de Polignac number, because 292121 - 2⁶ = 292057 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 292121.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 292121.

It is not an unprimeable number, because it can be changed into a prime (292141) 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, 206 + ... + 791.

It is an arithmetic number, because the mean of its divisors is an integer number (73353).

2²⁹²¹²¹ is an apocalyptic number.

It is an amenable number.

292121 is a deficient number, since it is larger than the sum of its proper divisors (1291).

292121 is an equidigital number, since it uses as much as digits as its factorization.

292121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290.

The product of its digits is 72, while the sum is 17.

The square root of 292121 is about 540.4821921211. The cubic root of 292121 is about 66.3520369020.

The spelling of 292121 in words is "two hundred ninety-two thousand, one hundred twenty-one".