1421646 has 16 divisors (see below), whose sum is σ = 2856144. Its totient is φ = 471744.

The previous prime is 1421639. The next prime is 1421647. The reversal of 1421646 is 6461241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421647) 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 in 7 ways as a sum of consecutive naturals, for example, 1500 + ... + 2256.

It is an arithmetic number, because the mean of its divisors is an integer number (178509).

2^1421646 is an apocalyptic number.

1421646 is an abundant number, since it is smaller than the sum of its proper divisors (1434498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1421646 is a wasteful number, since it uses less digits than its factorization.

1421646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075.

The product of its digits is 1152, while the sum is 24.

The square root of 1421646 is about 1192.3279750136. The cubic root of 1421646 is about 112.4424990102.

Adding to 1421646 its reverse (6461241), we get a palindrome (7882887).

The spelling of 1421646 in words is "one million, four hundred twenty-one thousand, six hundred forty-six".