10366421 has 4 divisors (see below), whose sum is σ = 11163852. Its totient is φ = 9568992.

The previous prime is 10366417. The next prime is 10366439. The reversal of 10366421 is 12466301.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4363921 + 6002500 = 2089^2 + 2450^2 .

It is a cyclic number.

It is not a de Polignac number, because 10366421 - 2² = 10366417 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 (10366471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398696 + ... + 398721.

It is an arithmetic number, because the mean of its divisors is an integer number (2790963).

Almost surely, 2^10366421 is an apocalyptic number.

It is an amenable number.

10366421 is a deficient number, since it is larger than the sum of its proper divisors (797431).

10366421 is an equidigital number, since it uses as much as digits as its factorization.

10366421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797430.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 10366421 is about 3219.6926871986. The cubic root of 10366421 is about 218.0434010045.

The spelling of 10366421 in words is "ten million, three hundred sixty-six thousand, four hundred twenty-one".