42928345 has 4 divisors (see below), whose sum is σ = 51514020. Its totient is φ = 34342672.

The previous prime is 42928339. The next prime is 42928367. The reversal of 42928345 is 54382924.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4822416 + 38105929 = 2196^2 + 6173^2 .

It is a cyclic number.

It is not a de Polignac number, because 42928345 - 2⁷ = 42928217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4292830 + ... + 4292839.

It is an arithmetic number, because the mean of its divisors is an integer number (12878505).

Almost surely, 2^42928345 is an apocalyptic number.

It is an amenable number.

42928345 is a deficient number, since it is larger than the sum of its proper divisors (8585675).

42928345 is an equidigital number, since it uses as much as digits as its factorization.

42928345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8585674.

The product of its digits is 69120, while the sum is 37.

The square root of 42928345 is about 6551.9726037278. The cubic root of 42928345 is about 350.1450963030.

The spelling of 42928345 in words is "forty-two million, nine hundred twenty-eight thousand, three hundred forty-five".