1421065 has 8 divisors (see below), whose sum is σ = 1729728. Its totient is φ = 1120560.

The previous prime is 1421041. The next prime is 1421083. The reversal of 1421065 is 5601241.

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

It is not a de Polignac number, because 1421065 - 2¹⁵ = 1388297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1647 + ... + 2356.

It is an arithmetic number, because the mean of its divisors is an integer number (216216).

2^1421065 is an apocalyptic number.

It is an amenable number.

1421065 is a deficient number, since it is larger than the sum of its proper divisors (308663).

1421065 is an equidigital number, since it uses as much as digits as its factorization.

1421065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4079.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1421065 is about 1192.0843090990. The cubic root of 1421065 is about 112.4271792110.

The spelling of 1421065 in words is "one million, four hundred twenty-one thousand, sixty-five".