20124075 has 24 divisors (see below), whose sum is σ = 33480000. Its totient is φ = 10665760.

The previous prime is 20124031. The next prime is 20124079. The reversal of 20124075 is 57042102.

It is not a de Polignac number, because 20124075 - 2¹³ = 20115883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20124079) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12676 + ... + 14174.

It is an arithmetic number, because the mean of its divisors is an integer number (1395000).

Almost surely, 2^20124075 is an apocalyptic number.

20124075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20124075 is a deficient number, since it is larger than the sum of its proper divisors (13355925).

20124075 is a wasteful number, since it uses less digits than its factorization.

20124075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691 (or 1686 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 20124075 is about 4485.9865135776. The cubic root of 20124075 is about 272.0019238258.

Adding to 20124075 its reverse (57042102), we get a palindrome (77166177).

The spelling of 20124075 in words is "twenty million, one hundred twenty-four thousand, seventy-five".