402104123 has 4 divisors (see below), whose sum is σ = 412971840. Its totient is φ = 391236408.

The previous prime is 402104089. The next prime is 402104149. The reversal of 402104123 is 321401204.

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 402104123 - 2¹⁶ = 402038587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402104323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5433803 + ... + 5433876.

It is an arithmetic number, because the mean of its divisors is an integer number (103242960).

Almost surely, 2^402104123 is an apocalyptic number.

402104123 is a deficient number, since it is larger than the sum of its proper divisors (10867717).

402104123 is a wasteful number, since it uses less digits than its factorization.

402104123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10867716.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 402104123 is about 20052.5340792629. The cubic root of 402104123 is about 738.0959835549.

Adding to 402104123 its reverse (321401204), we get a palindrome (723505327).

The spelling of 402104123 in words is "four hundred two million, one hundred four thousand, one hundred twenty-three".