402043111423 has 4 divisors (see below), whose sum is σ = 402971617888. Its totient is φ = 401114604960.

The previous prime is 402043111403. The next prime is 402043111439. The reversal of 402043111423 is 324111340204.

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-402043111423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402043111403) 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, 464252583 + ... + 464253448.

It is an arithmetic number, because the mean of its divisors is an integer number (100742904472).

Almost surely, 2^402043111423 is an apocalyptic number.

402043111423 is a deficient number, since it is larger than the sum of its proper divisors (928506465).

402043111423 is an equidigital number, since it uses as much as digits as its factorization.

402043111423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928506464.

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

Adding to 402043111423 its reverse (324111340204), we get a palindrome (726154451627).

The spelling of 402043111423 in words is "four hundred two billion, forty-three million, one hundred eleven thousand, four hundred twenty-three".