1421793 has 12 divisors (see below), whose sum is σ = 2130128. Its totient is φ = 947700.

The previous prime is 1421779. The next prime is 1421801. The reversal of 1421793 is 3971241.

It is not a de Polignac number, because 1421793 - 2¹⁸ = 1159649 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

1421793 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1421773) 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, 2683 + ... + 3168.

2^1421793 is an apocalyptic number.

It is an amenable number.

1421793 is a deficient number, since it is larger than the sum of its proper divisors (708335).

1421793 is an frugal number, since it uses more digits than its factorization.

1421793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5866 (or 5854 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 1421793 is about 1192.3896175328. The cubic root of 1421793 is about 112.4463744423.

The spelling of 1421793 in words is "one million, four hundred twenty-one thousand, seven hundred ninety-three".