421862005 has 4 divisors (see below), whose sum is σ = 506234412. Its totient is φ = 337489600.

The previous prime is 421862003. The next prime is 421862011. The reversal of 421862005 is 500268124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 157929489 + 263932516 = 12567^2 + 16246^2 .

It is not a de Polignac number, because 421862005 - 2¹ = 421862003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421862003) 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, 42186196 + ... + 42186205.

It is an arithmetic number, because the mean of its divisors is an integer number (126558603).

Almost surely, 2^421862005 is an apocalyptic number.

It is an amenable number.

421862005 is a deficient number, since it is larger than the sum of its proper divisors (84372407).

421862005 is an equidigital number, since it uses as much as digits as its factorization.

421862005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84372406.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 421862005 is about 20539.2795638016. The cubic root of 421862005 is about 749.9922991802.

The spelling of 421862005 in words is "four hundred twenty-one million, eight hundred sixty-two thousand, five".