10420681 has 4 divisors (see below), whose sum is σ = 10756864. Its totient is φ = 10084500.

The previous prime is 10420637. The next prime is 10420687. The reversal of 10420681 is 18602401.

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.

It is a cyclic number.

It is not a de Polignac number, because 10420681 - 2⁹ = 10420169 is a prime.

It is a super-2 number, since 2×10420681² = 217181185007522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10420687) 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 3 ways as a sum of consecutive naturals, for example, 168045 + ... + 168106.

It is an arithmetic number, because the mean of its divisors is an integer number (2689216).

Almost surely, 2^10420681 is an apocalyptic number.

It is an amenable number.

10420681 is a deficient number, since it is larger than the sum of its proper divisors (336183).

10420681 is an equidigital number, since it uses as much as digits as its factorization.

10420681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336182.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 10420681 is about 3228.1079597808. The cubic root of 10420681 is about 218.4231673264.

The spelling of 10420681 in words is "ten million, four hundred twenty thousand, six hundred eighty-one".