405240301 has 4 divisors (see below), whose sum is σ = 410791612. Its totient is φ = 399688992.

The previous prime is 405240293. The next prime is 405240313. The reversal of 405240301 is 103042504.

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

It can be written as a sum of positive squares in 2 ways, for example, as 220552201 + 184688100 = 14851^2 + 13590^2 .

It is a cyclic number.

It is not a de Polignac number, because 405240301 - 2³ = 405240293 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 (405240001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2775546 + ... + 2775691.

It is an arithmetic number, because the mean of its divisors is an integer number (102697903).

Almost surely, 2^405240301 is an apocalyptic number.

It is an amenable number.

405240301 is a deficient number, since it is larger than the sum of its proper divisors (5551311).

405240301 is an equidigital number, since it uses as much as digits as its factorization.

405240301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5551310.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 405240301 is about 20130.5812385038. The cubic root of 405240301 is about 740.0099225599.

Adding to 405240301 its reverse (103042504), we get a palindrome (508282805).

The spelling of 405240301 in words is "four hundred five million, two hundred forty thousand, three hundred one".