402134444244 has 72 divisors (see below), whose sum is σ = 1095600378600. Its totient is φ = 123631828992.

The previous prime is 402134444227. The next prime is 402134444267. The reversal of 402134444244 is 442444431204.

It is a happy number.

402134444244 is a `hidden beast` number, since 40 + 2 + 134 + 4 + 442 + 44 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 15173312400 + 386961131844 = 123180^2 + 622062^2 .

It is a super-2 number, since 2×402134444244² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 402134444199 and 402134444208.

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 216532 + ... + 922580.

It is an arithmetic number, because the mean of its divisors is an integer number (15216671925).

Almost surely, 2^402134444244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402134444244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (547800189300).

402134444244 is an abundant number, since it is smaller than the sum of its proper divisors (693465934356).

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

402134444244 is a wasteful number, since it uses less digits than its factorization.

402134444244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707289 (or 707284 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 36.

Adding to 402134444244 its reverse (442444431204), we get a palindrome (844578875448).

The spelling of 402134444244 in words is "four hundred two billion, one hundred thirty-four million, four hundred forty-four thousand, two hundred forty-four".