1026428345 has 4 divisors (see below), whose sum is σ = 1231714020. Its totient is φ = 821142672.

The previous prime is 1026428323. The next prime is 1026428401. The reversal of 1026428345 is 5438246201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5438246201 = 23 ⋅236445487.

It can be written as a sum of positive squares in 2 ways, for example, as 167469481 + 858958864 = 12941^2 + 29308^2 .

It is a cyclic number.

It is not a de Polignac number, because 1026428345 - 2¹⁰ = 1026427321 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102642830 + ... + 102642839.

It is an arithmetic number, because the mean of its divisors is an integer number (307928505).

Almost surely, 2^1026428345 is an apocalyptic number.

It is an amenable number.

1026428345 is a deficient number, since it is larger than the sum of its proper divisors (205285675).

1026428345 is an equidigital number, since it uses as much as digits as its factorization.

1026428345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205285674.

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 1026428345 is about 32037.9204225243. The cubic root of 1026428345 is about 1008.7329617078.

The spelling of 1026428345 in words is "one billion, twenty-six million, four hundred twenty-eight thousand, three hundred forty-five".