402104023 has 4 divisors (see below), whose sum is σ = 402976728. Its totient is φ = 401231320.

The previous prime is 402103997. The next prime is 402104033. The reversal of 402104023 is 320401204.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402104023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402103988 and 402104006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402104033) 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, 435661 + ... + 436582.

It is an arithmetic number, because the mean of its divisors is an integer number (100744182).

Almost surely, 2^402104023 is an apocalyptic number.

402104023 is a deficient number, since it is larger than the sum of its proper divisors (872705).

402104023 is an equidigital number, since it uses as much as digits as its factorization.

402104023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872704.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 402104023 is about 20052.5315858123. The cubic root of 402104023 is about 738.0959223688.

Adding to 402104023 its reverse (320401204), we get a palindrome (722505227).

The spelling of 402104023 in words is "four hundred two million, one hundred four thousand, twenty-three".