202120004 has 24 divisors (see below), whose sum is σ = 378030240. Its totient is φ = 94222976.

The previous prime is 202119989. The next prime is 202120091. The reversal of 202120004 is 400021202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6614 + ... + 21165.

It is an arithmetic number, because the mean of its divisors is an integer number (15751260).

Almost surely, 2^202120004 is an apocalyptic number.

It is an amenable number.

202120004 is a deficient number, since it is larger than the sum of its proper divisors (175910236).

202120004 is a wasteful number, since it uses less digits than its factorization.

202120004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27907 (or 27905 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 202120004 is about 14216.8915027161. The cubic root of 202120004 is about 586.8625991279.

Adding to 202120004 its reverse (400021202), we get a palindrome (602141206).

The spelling of 202120004 in words is "two hundred two million, one hundred twenty thousand, four".