413021021 has 4 divisors (see below), whose sum is σ = 472024032. Its totient is φ = 354018012.

The previous prime is 413021009. The next prime is 413021027. The reversal of 413021021 is 120120314.

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 413021021 - 2⁶ = 413020957 is a prime.

It is a Duffinian number.

413021021 is a modest number, since divided by 21021 gives 413 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 413020987 and 413021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (413021027) 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, 29501495 + ... + 29501508.

It is an arithmetic number, because the mean of its divisors is an integer number (118006008).

Almost surely, 2^413021021 is an apocalyptic number.

It is an amenable number.

413021021 is a deficient number, since it is larger than the sum of its proper divisors (59003011).

413021021 is an equidigital number, since it uses as much as digits as its factorization.

413021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59003010.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 413021021 is about 20322.9186142148. The cubic root of 413021021 is about 744.7160583342.

Adding to 413021021 its reverse (120120314), we get a palindrome (533141335).

The spelling of 413021021 in words is "four hundred thirteen million, twenty-one thousand, twenty-one".