1421773 has 2 divisors, whose sum is σ = 1421774. Its totient is φ = 1421772.

The previous prime is 1421759. The next prime is 1421779. The reversal of 1421773 is 3771241.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1397124 + 24649 = 1182^2 + 157^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421773 - 2⁵ = 1421741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710886 + 710887.

It is an arithmetic number, because the mean of its divisors is an integer number (710887).

2^1421773 is an apocalyptic number.

It is an amenable number.

1421773 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421773 is an equidigital number, since it uses as much as digits as its factorization.

1421773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1176, while the sum is 25.

The square root of 1421773 is about 1192.3812309828. The cubic root of 1421773 is about 112.4458471883.

The spelling of 1421773 in words is "one million, four hundred twenty-one thousand, seven hundred seventy-three".