402144441410 has 32 divisors (see below), whose sum is σ = 755506008432. Its totient is φ = 153973381120.

The previous prime is 402144441397. The next prime is 402144441539. The reversal of 402144441410 is 14144441204.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 123019249081 + 279125192329 = 350741^2 + 528323^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9231479 + ... + 9274938.

Almost surely, 2^402144441410 is an apocalyptic number.

402144441410 is a deficient number, since it is larger than the sum of its proper divisors (353361567022).

402144441410 is a wasteful number, since it uses less digits than its factorization.

402144441410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18506518.

The product of its (nonzero) digits is 8192, while the sum is 29.

Adding to 402144441410 its reverse (14144441204), we get a palindrome (416288882614).

The spelling of 402144441410 in words is "four hundred two billion, one hundred forty-four million, four hundred forty-one thousand, four hundred ten".