20124135 has 24 divisors (see below), whose sum is σ = 36719280. Its totient is φ = 10167552.

The previous prime is 20124127. The next prime is 20124179. The reversal of 20124135 is 53142102.

It is not a de Polignac number, because 20124135 - 2³ = 20124127 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 10914 + ... + 12623.

It is an arithmetic number, because the mean of its divisors is an integer number (1529970).

Almost surely, 2^20124135 is an apocalyptic number.

20124135 is a deficient number, since it is larger than the sum of its proper divisors (16595145).

20124135 is a wasteful number, since it uses less digits than its factorization.

20124135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23567 (or 23564 counting only the distinct ones).

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

The square root of 20124135 is about 4485.9932010648. The cubic root of 20124135 is about 272.0021941504.

Adding to 20124135 its reverse (53142102), we get a palindrome (73266237).

It can be divided in two parts, 201 and 24135, that added together give a square (24336 = 156²).

The spelling of 20124135 in words is "twenty million, one hundred twenty-four thousand, one hundred thirty-five".