401442312445 has 4 divisors (see below), whose sum is σ = 481730774940. Its totient is φ = 321153849952.

The previous prime is 401442312443. The next prime is 401442312493. The reversal of 401442312445 is 544213244104.

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 250658432964 + 150783879481 = 500658^2 + 388309^2 .

It is a cyclic number.

It is not a de Polignac number, because 401442312445 - 2¹ = 401442312443 is a prime.

It is a super-2 number, since 2×401442312445² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401442312445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401442312443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40144231240 + ... + 40144231249.

It is an arithmetic number, because the mean of its divisors is an integer number (120432693735).

Almost surely, 2^401442312445 is an apocalyptic number.

It is an amenable number.

401442312445 is a deficient number, since it is larger than the sum of its proper divisors (80288462495).

401442312445 is an equidigital number, since it uses as much as digits as its factorization.

401442312445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80288462494.

The product of its (nonzero) digits is 61440, while the sum is 34.

Adding to 401442312445 its reverse (544213244104), we get a palindrome (945655556549).

The spelling of 401442312445 in words is "four hundred one billion, four hundred forty-two million, three hundred twelve thousand, four hundred forty-five".