1329541 has 2 divisors, whose sum is σ = 1329542. Its totient is φ = 1329540.

The previous prime is 1329533. The next prime is 1329569. The reversal of 1329541 is 1459231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1256641 + 72900 = 1121^2 + 270^2 .

It is a cyclic number.

It is not a de Polignac number, because 1329541 - 2³ = 1329533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1329241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664770 + 664771.

It is an arithmetic number, because the mean of its divisors is an integer number (664771).

2^1329541 is an apocalyptic number.

It is an amenable number.

1329541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1329541 is an equidigital number, since it uses as much as digits as its factorization.

1329541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 25.

The square root of 1329541 is about 1153.0572405566. The cubic root of 1329541 is about 109.9597924675.

The spelling of 1329541 in words is "one million, three hundred twenty-nine thousand, five hundred forty-one".