1421966 has 24 divisors (see below), whose sum is σ = 2643984. Its totient is φ = 561600.

The previous prime is 1421963. The next prime is 1421969. The reversal of 1421966 is 6691241.

It is an interprime number because it is at equal distance from previous prime (1421963) and next prime (1421969).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421963) 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 11 ways as a sum of consecutive naturals, for example, 2066 + ... + 2666.

It is an arithmetic number, because the mean of its divisors is an integer number (110166).

2^1421966 is an apocalyptic number.

1421966 is a deficient number, since it is larger than the sum of its proper divisors (1222018).

1421966 is a wasteful number, since it uses less digits than its factorization.

1421966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636 (or 623 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 1421966 is about 1192.4621587287. The cubic root of 1421966 is about 112.4509349828.

The spelling of 1421966 in words is "one million, four hundred twenty-one thousand, nine hundred sixty-six".