1421611 has 2 divisors, whose sum is σ = 1421612. Its totient is φ = 1421610.

The previous prime is 1421603. The next prime is 1421621. The reversal of 1421611 is 1161241.

It is a weak prime.

It is an emirp because it is prime and its reverse (1161241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1421611 - 2³ = 1421603 is a prime.

It is not a weakly prime, because it can be changed into another prime (1421621) by changing a digit.

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 as a sum of consecutive naturals, namely, 710805 + 710806.

It is an arithmetic number, because the mean of its divisors is an integer number (710806).

2^1421611 is an apocalyptic number.

1421611 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421611 is an equidigital number, since it uses as much as digits as its factorization.

1421611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48, while the sum is 16.

The square root of 1421611 is about 1192.3132977536. The cubic root of 1421611 is about 112.4415762489.

Adding to 1421611 its reverse (1161241), we get a palindrome (2582852).

The spelling of 1421611 in words is "one million, four hundred twenty-one thousand, six hundred eleven".