2002423405 has 8 divisors (see below), whose sum is σ = 2405653272. Its totient is φ = 1600108608.

The previous prime is 2002423363. The next prime is 2002423411. The reversal of 2002423405 is 5043242002.

It can be written as a sum of positive squares in 4 ways, for example, as 350326089 + 1652097316 = 18717^2 + 40646^2 .

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 2002423405 - 2⁷ = 2002423277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223942 + ... + 232711.

It is an arithmetic number, because the mean of its divisors is an integer number (300706659).

Almost surely, 2^2002423405 is an apocalyptic number.

It is an amenable number.

2002423405 is a deficient number, since it is larger than the sum of its proper divisors (403229867).

2002423405 is an equidigital number, since it uses as much as digits as its factorization.

2002423405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457535.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 2002423405 is about 44748.4458389339. The cubic root of 2002423405 is about 1260.4297276568.

Adding to 2002423405 its reverse (5043242002), we get a palindrome (7045665407).

The spelling of 2002423405 in words is "two billion, two million, four hundred twenty-three thousand, four hundred five".