405201243 has 8 divisors (see below), whose sum is σ = 540778000. Its totient is φ = 269879328.

The previous prime is 405201233. The next prime is 405201289. The reversal of 405201243 is 342102504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 405201243 - 2⁸ = 405200987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405201233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59968 + ... + 66381.

It is an arithmetic number, because the mean of its divisors is an integer number (67597250).

Almost surely, 2^405201243 is an apocalyptic number.

405201243 is a deficient number, since it is larger than the sum of its proper divisors (135576757).

405201243 is a wasteful number, since it uses less digits than its factorization.

405201243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127421.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 405201243 is about 20129.6110990749. The cubic root of 405201243 is about 739.9861471719.

Adding to 405201243 its reverse (342102504), we get a palindrome (747303747).

The spelling of 405201243 in words is "four hundred five million, two hundred one thousand, two hundred forty-three".