10420643 has 8 divisors (see below), whose sum is σ = 11332512. Its totient is φ = 9542016.

The previous prime is 10420637. The next prime is 10420687. The reversal of 10420643 is 34602401.

It is a happy number.

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 10420643 - 2¹⁴ = 10404259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10420603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7655 + ... + 8912.

It is an arithmetic number, because the mean of its divisors is an integer number (1416564).

Almost surely, 2^10420643 is an apocalyptic number.

10420643 is a deficient number, since it is larger than the sum of its proper divisors (911869).

10420643 is a wasteful number, since it uses less digits than its factorization.

10420643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16621.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 10420643 is about 3228.1020739747. The cubic root of 10420643 is about 218.4229018258.

The spelling of 10420643 in words is "ten million, four hundred twenty thousand, six hundred forty-three".