10421532421 has 8 divisors (see below), whose sum is σ = 10513375488. Its totient is φ = 10329990000.

The previous prime is 10421532419. The next prime is 10421532467. The reversal of 10421532421 is 12423512401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10421532421 - 2¹ = 10421532419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10421542421) 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 in 7 ways as a sum of consecutive naturals, for example, 5245 + ... + 144466.

It is an arithmetic number, because the mean of its divisors is an integer number (1314171936).

Almost surely, 2^10421532421 is an apocalyptic number.

It is an amenable number.

10421532421 is a deficient number, since it is larger than the sum of its proper divisors (91843067).

10421532421 is a wasteful number, since it uses less digits than its factorization.

10421532421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150323.

The product of its (nonzero) digits is 1920, while the sum is 25.

The spelling of 10421532421 in words is "ten billion, four hundred twenty-one million, five hundred thirty-two thousand, four hundred twenty-one".