402044140241 has 4 divisors (see below), whose sum is σ = 403046744484. Its totient is φ = 401041536000.

The previous prime is 402044140237. The next prime is 402044140273. The reversal of 402044140241 is 142041440204.

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 182945253841 + 219098886400 = 427721^2 + 468080^2 .

It is a cyclic number.

It is not a de Polignac number, because 402044140241 - 2² = 402044140237 is a prime.

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 402044140241.

It is not an unprimeable number, because it can be changed into a prime (402044140541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501301520 + ... + 501302321.

It is an arithmetic number, because the mean of its divisors is an integer number (100761686121).

Almost surely, 2^402044140241 is an apocalyptic number.

It is an amenable number.

402044140241 is a deficient number, since it is larger than the sum of its proper divisors (1002604243).

402044140241 is a wasteful number, since it uses less digits than its factorization.

402044140241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002604242.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 402044140241 its reverse (142041440204), we get a palindrome (544085580445).

The spelling of 402044140241 in words is "four hundred two billion, forty-four million, one hundred forty thousand, two hundred forty-one".