210442004 has 12 divisors (see below), whose sum is σ = 368727828. Its totient is φ = 105091200.

The previous prime is 210441961. The next prime is 210442007. The reversal of 210442004 is 400244012.

It can be written as a sum of positive squares in 2 ways, for example, as 64032004 + 146410000 = 8002^2 + 12100^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210442007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28757 + ... + 35324.

It is an arithmetic number, because the mean of its divisors is an integer number (30727319).

Almost surely, 2^210442004 is an apocalyptic number.

It is an amenable number.

210442004 is a deficient number, since it is larger than the sum of its proper divisors (158285824).

210442004 is a wasteful number, since it uses less digits than its factorization.

210442004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64906 (or 64904 counting only the distinct ones).

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

The square root of 210442004 is about 14506.6193167119. The cubic root of 210442004 is about 594.8089248284.

Adding to 210442004 its reverse (400244012), we get a palindrome (610686016).

The spelling of 210442004 in words is "two hundred ten million, four hundred forty-two thousand, four".