1042502521 has 2 divisors, whose sum is σ = 1042502522. Its totient is φ = 1042502520.

The previous prime is 1042502501. The next prime is 1042502533. The reversal of 1042502521 is 1252052401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 938564496 + 103938025 = 30636^2 + 10195^2 .

It is an emirp because it is prime and its reverse (1252052401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1042502521 - 2¹⁹ = 1041978233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1042502492 and 1042502501.

It is not a weakly prime, because it can be changed into another prime (1042502501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521251260 + 521251261.

It is an arithmetic number, because the mean of its divisors is an integer number (521251261).

Almost surely, 2^1042502521 is an apocalyptic number.

It is an amenable number.

1042502521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042502521 is an equidigital number, since it uses as much as digits as its factorization.

1042502521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 1042502521 is about 32287.8076214536. The cubic root of 1042502521 is about 1013.9713979667.

Adding to 1042502521 its reverse (1252052401), we get a palindrome (2294554922).

The spelling of 1042502521 in words is "one billion, forty-two million, five hundred two thousand, five hundred twenty-one".