1232521 has 4 divisors (see below), whose sum is σ = 1238272. Its totient is φ = 1226772.

The previous prime is 1232477. The next prime is 1232527. The reversal of 1232521 is 1252321.

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: 1252321 = 7 ⋅178903.

It is a cyclic number.

It is not a de Polignac number, because 1232521 - 2⁷ = 1232393 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1232495 and 1232504.

It is not an unprimeable number, because it can be changed into a prime (1232527) 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, 2541 + ... + 2986.

It is an arithmetic number, because the mean of its divisors is an integer number (309568).

2^1232521 is an apocalyptic number.

It is an amenable number.

1232521 is a deficient number, since it is larger than the sum of its proper divisors (5751).

1232521 is an equidigital number, since it uses as much as digits as its factorization.

1232521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5750.

The product of its digits is 120, while the sum is 16.

The square root of 1232521 is about 1110.1896234428. The cubic root of 1232521 is about 107.2172776507.

Adding to 1232521 its reverse (1252321), we get a palindrome (2484842).

The spelling of 1232521 in words is "one million, two hundred thirty-two thousand, five hundred twenty-one".