1428545 has 4 divisors (see below), whose sum is σ = 1714260. Its totient is φ = 1142832.

The previous prime is 1428541. The next prime is 1428571. The reversal of 1428545 is 5458241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5458241 = 17 ⋅321073.

It can be written as a sum of positive squares in 2 ways, for example, as 863041 + 565504 = 929^2 + 752^2 .

It is a cyclic number.

It is not a de Polignac number, because 1428545 - 2² = 1428541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1428541) 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, 142850 + ... + 142859.

It is an arithmetic number, because the mean of its divisors is an integer number (428565).

2^1428545 is an apocalyptic number.

It is an amenable number.

1428545 is a deficient number, since it is larger than the sum of its proper divisors (285715).

1428545 is an equidigital number, since it uses as much as digits as its factorization.

1428545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285714.

The product of its digits is 6400, while the sum is 29.

The square root of 1428545 is about 1195.2175534186. The cubic root of 1428545 is about 112.6240935206.

The spelling of 1428545 in words is "one million, four hundred twenty-eight thousand, five hundred forty-five".