416021 has 4 divisors (see below), whose sum is σ = 417312. Its totient is φ = 414732.

The previous prime is 416011. The next prime is 416023. The reversal of 416021 is 120614.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 416021 - 2⁶ = 415957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 415987 and 416005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (416023) 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, 320 + ... + 966.

It is an arithmetic number, because the mean of its divisors is an integer number (104328).

2⁴¹⁶⁰²¹ is an apocalyptic number.

It is an amenable number.

416021 is a deficient number, since it is larger than the sum of its proper divisors (1291).

416021 is an equidigital number, since it uses as much as digits as its factorization.

416021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290.

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

The square root of 416021 is about 644.9968992174. The cubic root of 416021 is about 74.6514792488.

Adding to 416021 its reverse (120614), we get a palindrome (536635).

The spelling of 416021 in words is "four hundred sixteen thousand, twenty-one".