402404224442 has 16 divisors (see below), whose sum is σ = 664999244064. Its totient is φ = 181100010000.

The previous prime is 402404224253. The next prime is 402404224477. The reversal of 402404224442 is 244422404204.

It is a super-2 number, since 2×402404224442² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 402404224399 and 402404224408.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90547784 + ... + 90552227.

It is an arithmetic number, because the mean of its divisors is an integer number (41562452754).

Almost surely, 2^402404224442 is an apocalyptic number.

402404224442 is a deficient number, since it is larger than the sum of its proper divisors (262595019622).

402404224442 is a wasteful number, since it uses less digits than its factorization.

402404224442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181100125.

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 402404224442 its reverse (244422404204), we get a palindrome (646826628646).

The spelling of 402404224442 in words is "four hundred two billion, four hundred four million, two hundred twenty-four thousand, four hundred forty-two".