404342402 has 4 divisors (see below), whose sum is σ = 606513606. Its totient is φ = 202171200.

The previous prime is 404342383. The next prime is 404342413. The reversal of 404342402 is 204243404.

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., 211382521 + 192959881 = 14539^2 + 13891^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101085599 + ... + 101085602.

Almost surely, 2^404342402 is an apocalyptic number.

404342402 is a deficient number, since it is larger than the sum of its proper divisors (202171204).

404342402 is a wasteful number, since it uses less digits than its factorization.

404342402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202171203.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 404342402 is about 20108.2670063832. The cubic root of 404342402 is about 739.4629668229.

Adding to 404342402 its reverse (204243404), we get a palindrome (608585806).

The spelling of 404342402 in words is "four hundred four million, three hundred forty-two thousand, four hundred two".