1003140521 has 2 divisors, whose sum is σ = 1003140522. Its totient is φ = 1003140520.

The previous prime is 1003140517. The next prime is 1003140529. The reversal of 1003140521 is 1250413001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 940096921 + 63043600 = 30661^2 + 7940^2 .

It is a cyclic number.

It is not a de Polignac number, because 1003140521 - 2² = 1003140517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1003140521.

It is not a weakly prime, because it can be changed into another prime (1003140529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501570260 + 501570261.

It is an arithmetic number, because the mean of its divisors is an integer number (501570261).

Almost surely, 2^1003140521 is an apocalyptic number.

It is an amenable number.

1003140521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1003140521 is an equidigital number, since it uses as much as digits as its factorization.

1003140521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1003140521 is about 31672.3936733553. The cubic root of 1003140521 is about 1001.0457463667.

Adding to 1003140521 its reverse (1250413001), we get a palindrome (2253553522).

The spelling of 1003140521 in words is "one billion, three million, one hundred forty thousand, five hundred twenty-one".