413040021 has 4 divisors (see below), whose sum is σ = 550720032. Its totient is φ = 275360012.

The previous prime is 413039981. The next prime is 413040037. The reversal of 413040021 is 120040314.

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 413040021 - 2⁹ = 413039509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (413040071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68840001 + ... + 68840006.

It is an arithmetic number, because the mean of its divisors is an integer number (137680008).

Almost surely, 2^413040021 is an apocalyptic number.

It is an amenable number.

413040021 is a deficient number, since it is larger than the sum of its proper divisors (137680011).

413040021 is a wasteful number, since it uses less digits than its factorization.

413040021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137680010.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 413040021 is about 20323.3860613826. The cubic root of 413040021 is about 744.7274777595.

Adding to 413040021 its reverse (120040314), we get a palindrome (533080335).

The spelling of 413040021 in words is "four hundred thirteen million, forty thousand, twenty-one".