142121204 has 12 divisors (see below), whose sum is σ = 252424704. Its totient is φ = 69999864.

The previous prime is 142121179. The next prime is 142121219. The reversal of 142121204 is 402121241.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264884 + ... + 265419.

It is an arithmetic number, because the mean of its divisors is an integer number (21035392).

Almost surely, 2^142121204 is an apocalyptic number.

It is an amenable number.

142121204 is a deficient number, since it is larger than the sum of its proper divisors (110303500).

142121204 is a wasteful number, since it uses less digits than its factorization.

142121204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530374 (or 530372 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 142121204 is about 11921.4598099394. The cubic root of 142121204 is about 521.8587375811.

Adding to 142121204 its reverse (402121241), we get a palindrome (544242445).

The spelling of 142121204 in words is "one hundred forty-two million, one hundred twenty-one thousand, two hundred four".