402144434212 has 6 divisors (see below), whose sum is σ = 703752759878. Its totient is φ = 201072217104.

The previous prime is 402144434189. The next prime is 402144434213. The reversal of 402144434212 is 212434441204.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 286261381156 + 115883053056 = 535034^2 + 340416^2 .

It is not an unprimeable number, because it can be changed into a prime (402144434213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50268054273 + ... + 50268054280.

Almost surely, 2^402144434212 is an apocalyptic number.

It is an amenable number.

402144434212 is a deficient number, since it is larger than the sum of its proper divisors (301608325666).

402144434212 is a wasteful number, since it uses less digits than its factorization.

402144434212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100536108557 (or 100536108555 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 402144434212 its reverse (212434441204), we get a palindrome (614578875416).

The spelling of 402144434212 in words is "four hundred two billion, one hundred forty-four million, four hundred thirty-four thousand, two hundred twelve".