20124143 has 8 divisors (see below), whose sum is σ = 21807408. Its totient is φ = 18460224.

The previous prime is 20124127. The next prime is 20124179. The reversal of 20124143 is 34142102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20124143 - 2⁴ = 20124127 is a prime.

It is a super-2 number, since 2×20124143² = 809962262968898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20124113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2630 + ... + 6867.

It is an arithmetic number, because the mean of its divisors is an integer number (2725926).

Almost surely, 2^20124143 is an apocalyptic number.

20124143 is a deficient number, since it is larger than the sum of its proper divisors (1683265).

20124143 is a wasteful number, since it uses less digits than its factorization.

20124143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9673.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 20124143 is about 4485.9940927291. The cubic root of 20124143 is about 272.0022301937.

Adding to 20124143 its reverse (34142102), we get a palindrome (54266245).

The spelling of 20124143 in words is "twenty million, one hundred twenty-four thousand, one hundred forty-three".