1428245 has 32 divisors (see below), whose sum is σ = 2188032. Its totient is φ = 870912.

The previous prime is 1428233. The next prime is 1428247. The reversal of 1428245 is 5428241.

It is a happy number.

It is not a de Polignac number, because 1428245 - 2¹⁰ = 1427221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428247) 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 31 ways as a sum of consecutive naturals, for example, 19529 + ... + 19601.

It is an arithmetic number, because the mean of its divisors is an integer number (68376).

2^1428245 is an apocalyptic number.

It is an amenable number.

1428245 is a deficient number, since it is larger than the sum of its proper divisors (759787).

1428245 is a wasteful number, since it uses less digits than its factorization.

1428245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141.

The product of its digits is 2560, while the sum is 26.

The square root of 1428245 is about 1195.0920466642. The cubic root of 1428245 is about 112.6162091362.

The spelling of 1428245 in words is "one million, four hundred twenty-eight thousand, two hundred forty-five".