402358123 has 4 divisors (see below), whose sum is σ = 402542968. Its totient is φ = 402173280.

The previous prime is 402358109. The next prime is 402358127. The reversal of 402358123 is 321853204.

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

It is a cyclic number.

It is not a de Polignac number, because 402358123 - 2⁹ = 402357611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402358091 and 402358100.

It is not an unprimeable number, because it can be changed into a prime (402358127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89118 + ... + 93523.

It is an arithmetic number, because the mean of its divisors is an integer number (100635742).

Almost surely, 2^402358123 is an apocalyptic number.

402358123 is a deficient number, since it is larger than the sum of its proper divisors (184845).

402358123 is a wasteful number, since it uses less digits than its factorization.

402358123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184844.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 402358123 is about 20058.8664435456. The cubic root of 402358123 is about 738.2513636403.

The spelling of 402358123 in words is "four hundred two million, three hundred fifty-eight thousand, one hundred twenty-three".