402223210442 has 16 divisors (see below), whose sum is σ = 616613570664. Its totient is φ = 196721784000.

The previous prime is 402223210429. The next prime is 402223210447. The reversal of 402223210442 is 244012322204.

It can be written as a sum of positive squares in 4 ways, for example, as 18763794361 + 383459416081 = 136981^2 + 619241^2 .

It is a super-2 number, since 2×402223210442² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (402223210447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9085409 + ... + 9129572.

Almost surely, 2^402223210442 is an apocalyptic number.

402223210442 is a deficient number, since it is larger than the sum of its proper divisors (214390360222).

402223210442 is a wasteful number, since it uses less digits than its factorization.

402223210442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18215225.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 402223210442 its reverse (244012322204), we get a palindrome (646235532646).

The spelling of 402223210442 in words is "four hundred two billion, two hundred twenty-three million, two hundred ten thousand, four hundred forty-two".