20142135 has 64 divisors (see below), whose sum is σ = 40320000. Its totient is φ = 9465984.

The previous prime is 20142131. The next prime is 20142163. The reversal of 20142135 is 53124102.

It is not a de Polignac number, because 20142135 - 2² = 20142131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20142131) 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 63 ways as a sum of consecutive naturals, for example, 40116 + ... + 40614.

It is an arithmetic number, because the mean of its divisors is an integer number (630000).

Almost surely, 2^20142135 is an apocalyptic number.

20142135 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

20142135 is a wasteful number, since it uses less digits than its factorization.

20142135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549 (or 543 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20142135 is about 4487.9989973261. The cubic root of 20142135 is about 272.0832672908.

Adding to 20142135 its reverse (53124102), we get a palindrome (73266237).

The spelling of 20142135 in words is "twenty million, one hundred forty-two thousand, one hundred thirty-five".