7828123 has 2 divisors, whose sum is σ = 7828124. Its totient is φ = 7828122.

The previous prime is 7828111. The next prime is 7828129. The reversal of 7828123 is 3218287.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7828123 - 2⁵ = 7828091 is a prime.

It is a super-2 number, since 2×7828123² = 122559019406258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7828129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3914061 + 3914062.

It is an arithmetic number, because the mean of its divisors is an integer number (3914062).

Almost surely, 2^7828123 is an apocalyptic number.

7828123 is a deficient number, since it is larger than the sum of its proper divisors (1).

7828123 is an equidigital number, since it uses as much as digits as its factorization.

7828123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 31.

The square root of 7828123 is about 2797.8783032863. The cubic root of 7828123 is about 198.5573099162.

The spelling of 7828123 in words is "seven million, eight hundred twenty-eight thousand, one hundred twenty-three".