1421341665 has 8 divisors (see below), whose sum is σ = 2274146688. Its totient is φ = 758048880.

The previous prime is 1421341657. The next prime is 1421341673. The reversal of 1421341665 is 5661431241.

It is an interprime number because it is at equal distance from previous prime (1421341657) and next prime (1421341673).

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

It is not a de Polignac number, because 1421341665 - 2³ = 1421341657 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47378041 + ... + 47378070.

It is an arithmetic number, because the mean of its divisors is an integer number (284268336).

Almost surely, 2^1421341665 is an apocalyptic number.

1421341665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1421341665 is a deficient number, since it is larger than the sum of its proper divisors (852805023).

1421341665 is an equidigital number, since it uses as much as digits as its factorization.

1421341665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94756119.

The product of its digits is 17280, while the sum is 33.

The square root of 1421341665 is about 37700.6852059747. The cubic root of 1421341665 is about 1124.3447483019.

The spelling of 1421341665 in words is "one billion, four hundred twenty-one million, three hundred forty-one thousand, six hundred sixty-five".