402144213144 has 32 divisors (see below), whose sum is σ = 1007408139840. Its totient is φ = 133775056800.

The previous prime is 402144213137. The next prime is 402144213179. The reversal of 402144213144 is 441312441204.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17051362 + ... + 17074929.

It is an arithmetic number, because the mean of its divisors is an integer number (31481504370).

Almost surely, 2^402144213144 is an apocalyptic number.

It is an amenable number.

402144213144 is an abundant number, since it is smaller than the sum of its proper divisors (605263926696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402144213144 is a wasteful number, since it uses less digits than its factorization.

402144213144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34126791 (or 34126787 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 402144213144 its reverse (441312441204), we get a palindrome (843456654348).

The spelling of 402144213144 in words is "four hundred two billion, one hundred forty-four million, two hundred thirteen thousand, one hundred forty-four".