202420004 has 6 divisors (see below), whose sum is σ = 354235014. Its totient is φ = 101210000.

The previous prime is 202419989. The next prime is 202420039. The reversal of 202420004 is 400024202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 168220900 + 34199104 = 12970^2 + 5848^2 .

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, 25302497 + ... + 25302504.

It is an arithmetic number, because the mean of its divisors is an integer number (59039169).

Almost surely, 2^202420004 is an apocalyptic number.

It is an amenable number.

202420004 is a deficient number, since it is larger than the sum of its proper divisors (151815010).

202420004 is a wasteful number, since it uses less digits than its factorization.

202420004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50605005 (or 50605003 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 202420004 is about 14227.4384201795. The cubic root of 202420004 is about 587.1528091383.

Adding to 202420004 its reverse (400024202), we get a palindrome (602444206).

The spelling of 202420004 in words is "two hundred two million, four hundred twenty thousand, four".