1020541 has 2 divisors, whose sum is σ = 1020542. Its totient is φ = 1020540.

The previous prime is 1020529. The next prime is 1020557. The reversal of 1020541 is 1450201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1020100 + 441 = 1010^2 + 21^2 .

It is an emirp because it is prime and its reverse (1450201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1020541 - 2⁷ = 1020413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510270 + 510271.

It is an arithmetic number, because the mean of its divisors is an integer number (510271).

2^1020541 is an apocalyptic number.

It is an amenable number.

1020541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020541 is an equidigital number, since it uses as much as digits as its factorization.

1020541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1020541 is about 1010.2182932416. The cubic root of 1020541 is about 100.6800646368.

Adding to 1020541 its reverse (1450201), we get a palindrome (2470742).

The spelling of 1020541 in words is "one million, twenty thousand, five hundred forty-one".