402823123 has 8 divisors (see below), whose sum is σ = 425718720. Its totient is φ = 380097000.

The previous prime is 402823117. The next prime is 402823151. The reversal of 402823123 is 321328204.

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 402823123 - 2⁹ = 402822611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402823103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37465 + ... + 47002.

It is an arithmetic number, because the mean of its divisors is an integer number (53214840).

Almost surely, 2^402823123 is an apocalyptic number.

402823123 is a deficient number, since it is larger than the sum of its proper divisors (22895597).

402823123 is a wasteful number, since it uses less digits than its factorization.

402823123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84737.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 402823123 is about 20070.4539809143. The cubic root of 402823123 is about 738.5356499557.

The spelling of 402823123 in words is "four hundred two million, eight hundred twenty-three thousand, one hundred twenty-three".