1002541 has 6 divisors (see below), whose sum is σ = 1065290. Its totient is φ = 943296.

The previous prime is 1002527. The next prime is 1002553. The reversal of 1002541 is 1452001.

It can be written as a sum of positive squares in 3 ways, for example, as 137641 + 864900 = 371^2 + 930^2 .

It is not a de Polignac number, because 1002541 - 2¹⁹ = 478253 is a prime.

It is a Duffinian number.

1002541 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1446 + ... + 2023.

2^1002541 is an apocalyptic number.

It is an amenable number.

1002541 is a deficient number, since it is larger than the sum of its proper divisors (62749).

1002541 is an equidigital number, since it uses as much as digits as its factorization.

1002541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3503 (or 3486 counting only the distinct ones).

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

The square root of 1002541 is about 1001.2696939387. The cubic root of 1002541 is about 100.0846283602.

Adding to 1002541 its reverse (1452001), we get a palindrome (2454542).

The spelling of 1002541 in words is "one million, two thousand, five hundred forty-one".