10542306521 has 2 divisors, whose sum is σ = 10542306522. Its totient is φ = 10542306520.

The previous prime is 10542306497. The next prime is 10542306527. The reversal of 10542306521 is 12560324501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6779710921 + 3762595600 = 82339^2 + 61340^2 .

It is a cyclic number.

It is not a de Polignac number, because 10542306521 - 2⁶ = 10542306457 is a prime.

It is a super-2 number, since 2×10542306521² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10542306527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5271153260 + 5271153261.

It is an arithmetic number, because the mean of its divisors is an integer number (5271153261).

Almost surely, 2^10542306521 is an apocalyptic number.

It is an amenable number.

10542306521 is a deficient number, since it is larger than the sum of its proper divisors (1).

10542306521 is an equidigital number, since it uses as much as digits as its factorization.

10542306521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 10542306521 in words is "ten billion, five hundred forty-two million, three hundred six thousand, five hundred twenty-one".