404121002 has 4 divisors (see below), whose sum is σ = 606181506. Its totient is φ = 202060500.

The previous prime is 404121001. The next prime is 404121007. The reversal of 404121002 is 200121404.

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., 221087161 + 183033841 = 14869^2 + 13529^2 .

It is not an unprimeable number, because it can be changed into a prime (404121001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101030249 + ... + 101030252.

Almost surely, 2^404121002 is an apocalyptic number.

404121002 is a deficient number, since it is larger than the sum of its proper divisors (202060504).

404121002 is a wasteful number, since it uses less digits than its factorization.

404121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202060503.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 404121002 is about 20102.7610541438. The cubic root of 404121002 is about 739.3279764529.

Adding to 404121002 its reverse (200121404), we get a palindrome (604242406).

It can be divided in two parts, 40412 and 1002, that added together give a palindrome (41414).

The spelling of 404121002 in words is "four hundred four million, one hundred twenty-one thousand, two".