1421841 has 16 divisors (see below), whose sum is σ = 2001600. Its totient is φ = 896448.

The previous prime is 1421813. The next prime is 1421857. The reversal of 1421841 is 1481241.

It is a happy number.

It is not a de Polignac number, because 1421841 - 2¹⁰ = 1420817 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1421801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4995 + ... + 5271.

It is an arithmetic number, because the mean of its divisors is an integer number (125100).

2^1421841 is an apocalyptic number.

It is an amenable number.

1421841 is a deficient number, since it is larger than the sum of its proper divisors (579759).

1421841 is a wasteful number, since it uses less digits than its factorization.

1421841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368.

The product of its digits is 256, while the sum is 21.

The square root of 1421841 is about 1192.4097450122. The cubic root of 1421841 is about 112.4476398316.

The spelling of 1421841 in words is "one million, four hundred twenty-one thousand, eight hundred forty-one".