404528123 has 2 divisors, whose sum is σ = 404528124. Its totient is φ = 404528122.

The previous prime is 404528119. The next prime is 404528153. The reversal of 404528123 is 321825404.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404528123 - 2² = 404528119 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (404528153) by changing a digit.

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 as a sum of consecutive naturals, namely, 202264061 + 202264062.

It is an arithmetic number, because the mean of its divisors is an integer number (202264062).

Almost surely, 2^404528123 is an apocalyptic number.

404528123 is a deficient number, since it is larger than the sum of its proper divisors (1).

404528123 is an equidigital number, since it uses as much as digits as its factorization.

404528123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 404528123 is about 20112.8845022289. The cubic root of 404528123 is about 739.5761652572.

The spelling of 404528123 in words is "four hundred four million, five hundred twenty-eight thousand, one hundred twenty-three".