402144443234 has 4 divisors (see below), whose sum is σ = 603216664854. Its totient is φ = 201072221616.

The previous prime is 402144443231. The next prime is 402144443273. The reversal of 402144443234 is 432344441204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 254523277009 + 147621166225 = 504503^2 + 384215^2 .

It is a junction number, because it is equal to n+sod(n) for n = 402144443194 and 402144443203.

It is not an unprimeable number, because it can be changed into a prime (402144443231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100536110807 + ... + 100536110810.

Almost surely, 2^402144443234 is an apocalyptic number.

402144443234 is a deficient number, since it is larger than the sum of its proper divisors (201072221620).

402144443234 is a wasteful number, since it uses less digits than its factorization.

402144443234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201072221619.

The product of its (nonzero) digits is 147456, while the sum is 35.

Adding to 402144443234 its reverse (432344441204), we get a palindrome (834488884438).

The spelling of 402144443234 in words is "four hundred two billion, one hundred forty-four million, four hundred forty-three thousand, two hundred thirty-four".