213142055 has 16 divisors (see below), whose sum is σ = 294007104. Its totient is φ = 145305600.

The previous prime is 213142051. The next prime is 213142063. The reversal of 213142055 is 550241312.

It is not a de Polignac number, because 213142055 - 2² = 213142051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213142055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213142051) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 11546 + ... + 23655.

It is an arithmetic number, because the mean of its divisors is an integer number (18375444).

Almost surely, 2^213142055 is an apocalyptic number.

213142055 is a deficient number, since it is larger than the sum of its proper divisors (80865049).

213142055 is a wasteful number, since it uses less digits than its factorization.

213142055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35386.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 213142055 is about 14599.3854322708. The cubic root of 213142055 is about 597.3419970512.

Adding to 213142055 its reverse (550241312), we get a palindrome (763383367).

The spelling of 213142055 in words is "two hundred thirteen million, one hundred forty-two thousand, fifty-five".