1428432145 has 8 divisors (see below), whose sum is σ = 1958992704. Its totient is φ = 979496304.

The previous prime is 1428432121. The next prime is 1428432199. The reversal of 1428432145 is 5412348241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1428432145 - 2⁵ = 1428432113 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 1428432145.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 20406139 + ... + 20406208.

It is an arithmetic number, because the mean of its divisors is an integer number (244874088).

Almost surely, 2^1428432145 is an apocalyptic number.

It is an amenable number.

1428432145 is a deficient number, since it is larger than the sum of its proper divisors (530560559).

1428432145 is an equidigital number, since it uses as much as digits as its factorization.

1428432145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40812359.

The product of its digits is 30720, while the sum is 34.

The square root of 1428432145 is about 37794.6047075505. The cubic root of 1428432145 is about 1126.2112767610.

The spelling of 1428432145 in words is "one billion, four hundred twenty-eight million, four hundred thirty-two thousand, one hundred forty-five".