1421173 has 4 divisors (see below), whose sum is σ = 1530508. Its totient is φ = 1311840.

The previous prime is 1421159. The next prime is 1421191. The reversal of 1421173 is 3711241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 386884 + 1034289 = 622^2 + 1017^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421173 - 2⁵ = 1421141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1421173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54648 + ... + 54673.

It is an arithmetic number, because the mean of its divisors is an integer number (382627).

2^1421173 is an apocalyptic number.

1421173 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1421173 is a deficient number, since it is larger than the sum of its proper divisors (109335).

1421173 is a wasteful number, since it uses less digits than its factorization.

1421173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109334.

The product of its digits is 168, while the sum is 19.

The square root of 1421173 is about 1192.1296070478. The cubic root of 1421173 is about 112.4300272693.

The spelling of 1421173 in words is "one million, four hundred twenty-one thousand, one hundred seventy-three".