404202122 has 4 divisors (see below), whose sum is σ = 606303186. Its totient is φ = 202101060.

The previous prime is 404202121. The next prime is 404202163. The reversal of 404202122 is 221202404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 358382761 + 45819361 = 18931^2 + 6769^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 404202122.

It is not an unprimeable number, because it can be changed into a prime (404202121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101050529 + ... + 101050532.

Almost surely, 2^404202122 is an apocalyptic number.

404202122 is a deficient number, since it is larger than the sum of its proper divisors (202101064).

404202122 is a wasteful number, since it uses less digits than its factorization.

404202122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202101063.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 404202122 is about 20104.7785861969. The cubic root of 404202122 is about 739.3774420607.

Adding to 404202122 its reverse (221202404), we get a palindrome (625404526).

The spelling of 404202122 in words is "four hundred four million, two hundred two thousand, one hundred twenty-two".