402243343402 has 8 divisors (see below), whose sum is σ = 604342918116. Its totient is φ = 200795704032.

The previous prime is 402243343387. The next prime is 402243343409. The reversal of 402243343402 is 204343342204.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 356434074441 + 45809268961 = 597021^2 + 214031^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×402243343402² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (402243343409) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 162982293 + ... + 162984760.

Almost surely, 2^402243343402 is an apocalyptic number.

402243343402 is a deficient number, since it is larger than the sum of its proper divisors (202099574714).

402243343402 is a wasteful number, since it uses less digits than its factorization.

402243343402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325967672.

The product of its (nonzero) digits is 55296, while the sum is 31.

Adding to 402243343402 its reverse (204343342204), we get a palindrome (606586685606).

The spelling of 402243343402 in words is "four hundred two billion, two hundred forty-three million, three hundred forty-three thousand, four hundred two".