402212404144 has 20 divisors (see below), whose sum is σ = 788042564280. Its totient is φ = 198846581120.

The previous prime is 402212404141. The next prime is 402212404151. The reversal of 402212404144 is 441404212204.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (402212404141) 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, 141224842 + ... + 141227689.

It is an arithmetic number, because the mean of its divisors is an integer number (39402128214).

Almost surely, 2^402212404144 is an apocalyptic number.

It is an amenable number.

402212404144 is a deficient number, since it is larger than the sum of its proper divisors (385830160136).

402212404144 is a wasteful number, since it uses less digits than its factorization.

402212404144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282452628 (or 282452622 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 402212404144 its reverse (441404212204), we get a palindrome (843616616348).

The spelling of 402212404144 in words is "four hundred two billion, two hundred twelve million, four hundred four thousand, one hundred forty-four".