403240005 has 32 divisors (see below), whose sum is σ = 819283200. Its totient is φ = 184337856.

The previous prime is 403239997. The next prime is 403240007. The reversal of 403240005 is 500042304.

It is a happy number.

It is not a de Polignac number, because 403240005 - 2³ = 403239997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 403240005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403240007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212410 + ... + 214299.

It is an arithmetic number, because the mean of its divisors is an integer number (25602600).

Almost surely, 2^403240005 is an apocalyptic number.

403240005 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

403240005 is an abundant number, since it is smaller than the sum of its proper divisors (416043195).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

403240005 is a wasteful number, since it uses less digits than its factorization.

403240005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426730 (or 426724 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 403240005 is about 20080.8367604540. The cubic root of 403240005 is about 738.7903325142.

Adding to 403240005 its reverse (500042304), we get a palindrome (903282309).

The spelling of 403240005 in words is "four hundred three million, two hundred forty thousand, five".