410420721 has 8 divisors (see below), whose sum is σ = 554154880. Its totient is φ = 270150192.

The previous prime is 410420719. The next prime is 410420723. The reversal of 410420721 is 127024014.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (410420719) and next prime (410420723).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 410420721 - 2¹ = 410420719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (410420723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 865630 + ... + 866103.

It is an arithmetic number, because the mean of its divisors is an integer number (69269360).

Almost surely, 2^410420721 is an apocalyptic number.

It is an amenable number.

410420721 is a deficient number, since it is larger than the sum of its proper divisors (143734159).

410420721 is a wasteful number, since it uses less digits than its factorization.

410420721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731815.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 410420721 is about 20258.8430321181. The cubic root of 410420721 is about 743.1499045121.

Adding to 410420721 its reverse (127024014), we get a palindrome (537444735).

The spelling of 410420721 in words is "four hundred ten million, four hundred twenty thousand, seven hundred twenty-one".