421403041 has 4 divisors (see below), whose sum is σ = 421473172. Its totient is φ = 421332912.

The previous prime is 421403029. The next prime is 421403063. The reversal of 421403041 is 140304124.

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 9150625 + 412252416 = 3025^2 + 20304^2 .

It is a cyclic number.

It is not a de Polignac number, because 421403041 - 2⁵ = 421403009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421403011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25110 + ... + 38383.

It is an arithmetic number, because the mean of its divisors is an integer number (105368293).

Almost surely, 2^421403041 is an apocalyptic number.

It is an amenable number.

421403041 is a deficient number, since it is larger than the sum of its proper divisors (70131).

421403041 is an equidigital number, since it uses as much as digits as its factorization.

421403041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70130.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 421403041 is about 20528.1036873843. The cubic root of 421403041 is about 749.7202162336.

Adding to 421403041 its reverse (140304124), we get a palindrome (561707165).

The spelling of 421403041 in words is "four hundred twenty-one million, four hundred three thousand, forty-one".