401520424345 has 8 divisors (see below), whose sum is σ = 482019043464. Its totient is φ = 321086649984.

The previous prime is 401520424301. The next prime is 401520424363. The reversal of 401520424345 is 543424025104.

It can be written as a sum of positive squares in 4 ways, for example, as 44505809296 + 357014615049 = 210964^2 + 597507^2 .

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 401520424345 - 2⁹ = 401520423833 is a prime.

It is a super-2 number, since 2×401520424345² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 401520424345.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16197564 + ... + 16222333.

It is an arithmetic number, because the mean of its divisors is an integer number (60252380433).

Almost surely, 2^401520424345 is an apocalyptic number.

It is an amenable number.

401520424345 is a deficient number, since it is larger than the sum of its proper divisors (80498619119).

401520424345 is a wasteful number, since it uses less digits than its factorization.

401520424345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32422379.

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 401520424345 its reverse (543424025104), we get a palindrome (944944449449).

The spelling of 401520424345 in words is "four hundred one billion, five hundred twenty million, four hundred twenty-four thousand, three hundred forty-five".