404243122 has 16 divisors (see below), whose sum is σ = 627960600. Its totient is φ = 194938240.

The previous prime is 404243113. The next prime is 404243123. The reversal of 404243122 is 221342404.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 402363481 + 1879641 = 20059^2 + 1371^2 .

It is a junction number, because it is equal to n+sod(n) for n = 404243093 and 404243102.

It is not an unprimeable number, because it can be changed into a prime (404243123) 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, 58254 + ... + 64822.

Almost surely, 2^404243122 is an apocalyptic number.

404243122 is a deficient number, since it is larger than the sum of its proper divisors (223717478).

404243122 is a wasteful number, since it uses less digits than its factorization.

404243122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7661.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 404243122 is about 20105.7982184245. The cubic root of 404243122 is about 739.4024406514.

Adding to 404243122 its reverse (221342404), we get a palindrome (625585526).

The spelling of 404243122 in words is "four hundred four million, two hundred forty-three thousand, one hundred twenty-two".