1232161 has 4 divisors (see below), whose sum is σ = 1408192. Its totient is φ = 1056132.

The previous prime is 1232089. The next prime is 1232171. The reversal of 1232161 is 1612321.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1612321 = 19 ⋅84859.

It is not a de Polignac number, because 1232161 - 2¹⁹ = 707873 is a prime.

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

It is a Duffinian number.

1232161 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232171) 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, 88005 + ... + 88018.

It is an arithmetic number, because the mean of its divisors is an integer number (352048).

2^1232161 is an apocalyptic number.

It is an amenable number.

1232161 is a deficient number, since it is larger than the sum of its proper divisors (176031).

1232161 is an equidigital number, since it uses as much as digits as its factorization.

1232161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176030.

The product of its digits is 72, while the sum is 16.

The square root of 1232161 is about 1110.0274771374. The cubic root of 1232161 is about 107.2068378073.

Adding to 1232161 its reverse (1612321), we get a palindrome (2844482).

The spelling of 1232161 in words is "one million, two hundred thirty-two thousand, one hundred sixty-one".