1422545 has 4 divisors (see below), whose sum is σ = 1707060. Its totient is φ = 1138032.

The previous prime is 1422541. The next prime is 1422563. The reversal of 1422545 is 5452241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5452241 = 61 ⋅89381.

It can be written as a sum of positive squares in 2 ways, for example, as 559504 + 863041 = 748^2 + 929^2 .

It is a cyclic number.

It is not a de Polignac number, because 1422545 - 2² = 1422541 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1422545.

It is not an unprimeable number, because it can be changed into a prime (1422541) 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 3 ways as a sum of consecutive naturals, for example, 142250 + ... + 142259.

It is an arithmetic number, because the mean of its divisors is an integer number (426765).

2^1422545 is an apocalyptic number.

It is an amenable number.

1422545 is a deficient number, since it is larger than the sum of its proper divisors (284515).

1422545 is an equidigital number, since it uses as much as digits as its factorization.

1422545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284514.

The product of its digits is 1600, while the sum is 23.

The square root of 1422545 is about 1192.7049090198. The cubic root of 1422545 is about 112.4661956047.

Adding to 1422545 its reverse (5452241), we get a palindrome (6874786).

The spelling of 1422545 in words is "one million, four hundred twenty-two thousand, five hundred forty-five".