402222143506 has 8 divisors (see below), whose sum is σ = 603354255804. Its totient is φ = 201104058240.

The previous prime is 402222143467. The next prime is 402222143507. The reversal of 402222143506 is 605341222204.

It can be written as a sum of positive squares in 2 ways, for example, as 396070094281 + 6152049225 = 629341^2 + 78435^2 .

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

It is a super-2 number, since 2×402222143506² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (402222143507) 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, 3434775 + ... + 3549946.

Almost surely, 2^402222143506 is an apocalyptic number.

402222143506 is a deficient number, since it is larger than the sum of its proper divisors (201132112298).

402222143506 is a wasteful number, since it uses less digits than its factorization.

402222143506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7013516.

The product of its (nonzero) digits is 23040, while the sum is 31.

The spelling of 402222143506 in words is "four hundred two billion, two hundred twenty-two million, one hundred forty-three thousand, five hundred six".