1332421 has 2 divisors, whose sum is σ = 1332422. Its totient is φ = 1332420.

The previous prime is 1332389. The next prime is 1332427. The reversal of 1332421 is 1242331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 835396 + 497025 = 914^2 + 705^2 .

It is a cyclic number.

It is not a de Polignac number, because 1332421 - 2⁵ = 1332389 is a prime.

1332421 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1332395 and 1332404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1332427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666210 + 666211.

It is an arithmetic number, because the mean of its divisors is an integer number (666211).

2^1332421 is an apocalyptic number.

It is an amenable number.

1332421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1332421 is an equidigital number, since it uses as much as digits as its factorization.

1332421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 16.

The square root of 1332421 is about 1154.3054188559. The cubic root of 1332421 is about 110.0391320828.

Adding to 1332421 its reverse (1242331), we get a palindrome (2574752).

The spelling of 1332421 in words is "one million, three hundred thirty-two thousand, four hundred twenty-one".