10530421 has 8 divisors (see below), whose sum is σ = 11858688. Its totient is φ = 9264000.

The previous prime is 10530419. The next prime is 10530433. The reversal of 10530421 is 12403501.

10530421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10530421 - 2¹ = 10530419 is a prime.

It is a super-2 number, since 2×10530421² = 221779532874482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10530395 and 10530404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10530521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15100 + ... + 15781.

It is an arithmetic number, because the mean of its divisors is an integer number (1482336).

Almost surely, 2^10530421 is an apocalyptic number.

10530421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10530421 is a deficient number, since it is larger than the sum of its proper divisors (1328267).

10530421 is a wasteful number, since it uses less digits than its factorization.

10530421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30923.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 10530421 is about 3245.0610163755. The cubic root of 10530421 is about 219.1872282527.

Adding to 10530421 its reverse (12403501), we get a palindrome (22933922).

Subtracting 10530421 from its reverse (12403501), we obtain a triangular number (1873080 = T₁₉₃₅).

The spelling of 10530421 in words is "ten million, five hundred thirty thousand, four hundred twenty-one".