1421994 has 16 divisors (see below), whose sum is σ = 3250368. Its totient is φ = 406272.

The previous prime is 1421989. The next prime is 1422007. The reversal of 1421994 is 4991241.

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, 16887 + ... + 16970.

It is an arithmetic number, because the mean of its divisors is an integer number (203148).

2^1421994 is an apocalyptic number.

1421994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1421994 is an abundant number, since it is smaller than the sum of its proper divisors (1828374).

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

1421994 is a wasteful number, since it uses less digits than its factorization.

1421994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33869.

The product of its digits is 2592, while the sum is 30.

The square root of 1421994 is about 1192.4738990854. The cubic root of 1421994 is about 112.4516730702.

It can be divided in two parts, 1421 and 994, that added together give a triangular number (2415 = T₆₉).

The spelling of 1421994 in words is "one million, four hundred twenty-one thousand, nine hundred ninety-four".