10420132521 has 4 divisors (see below), whose sum is σ = 13893510032. Its totient is φ = 6946755012.

The previous prime is 10420132519. The next prime is 10420132561. The reversal of 10420132521 is 12523102401.

10420132521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12523102401 = 3 ⋅4174367467.

It is not a de Polignac number, because 10420132521 - 2¹ = 10420132519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10420132561) 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 in 3 ways as a sum of consecutive naturals, for example, 1736688751 + ... + 1736688756.

It is an arithmetic number, because the mean of its divisors is an integer number (3473377508).

Almost surely, 2^10420132521 is an apocalyptic number.

It is an amenable number.

10420132521 is a deficient number, since it is larger than the sum of its proper divisors (3473377511).

10420132521 is an equidigital number, since it uses as much as digits as its factorization.

10420132521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3473377510.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 10420132521 its reverse (12523102401), we get a palindrome (22943234922).

The spelling of 10420132521 in words is "ten billion, four hundred twenty million, one hundred thirty-two thousand, five hundred twenty-one".