421040605 has 16 divisors (see below), whose sum is σ = 530108928. Its totient is φ = 320616000.

The previous prime is 421040597. The next prime is 421040611. The reversal of 421040605 is 506040124.

It is not a de Polignac number, because 421040605 - 2³ = 421040597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12811 + ... + 31720.

It is an arithmetic number, because the mean of its divisors is an integer number (33131808).

Almost surely, 2^421040605 is an apocalyptic number.

It is an amenable number.

421040605 is a deficient number, since it is larger than the sum of its proper divisors (109068323).

421040605 is a wasteful number, since it uses less digits than its factorization.

421040605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44628.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 421040605 is about 20519.2739881313. The cubic root of 421040605 is about 749.5052173623.

Adding to 421040605 its reverse (506040124), we get a palindrome (927080729).

The spelling of 421040605 in words is "four hundred twenty-one million, forty thousand, six hundred five".