10445421 has 32 divisors (see below), whose sum is σ = 17141760. Its totient is φ = 5524416.

The previous prime is 10445417. The next prime is 10445441. The reversal of 10445421 is 12454401.

It is a happy number.

10445421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10445421 - 2² = 10445417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10445401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18475 + ... + 19031.

It is an arithmetic number, because the mean of its divisors is an integer number (535680).

Almost surely, 2^10445421 is an apocalyptic number.

It is an amenable number.

10445421 is a deficient number, since it is larger than the sum of its proper divisors (6696339).

10445421 is a wasteful number, since it uses less digits than its factorization.

10445421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 10445421 is about 3231.9376541016. The cubic root of 10445421 is about 218.5958853528.

Adding to 10445421 its reverse (12454401), we get a palindrome (22899822).

The spelling of 10445421 in words is "ten million, four hundred forty-five thousand, four hundred twenty-one".