142821204 has 48 divisors (see below), whose sum is σ = 342799296. Its totient is φ = 46252800.

The previous prime is 142821197. The next prime is 142821227. The reversal of 142821204 is 402128241.

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 162414 + ... + 163290.

It is an arithmetic number, because the mean of its divisors is an integer number (7141652).

Almost surely, 2^142821204 is an apocalyptic number.

It is an amenable number.

142821204 is an abundant number, since it is smaller than the sum of its proper divisors (199978092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142821204 is a wasteful number, since it uses less digits than its factorization.

142821204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256 (or 1254 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 142821204 is about 11950.7825685183. The cubic root of 142821204 is about 522.7141178098.

Adding to 142821204 its reverse (402128241), we get a palindrome (544949445).

The spelling of 142821204 in words is "one hundred forty-two million, eight hundred twenty-one thousand, two hundred four".