20134427 has 4 divisors (see below), whose sum is σ = 20165640. Its totient is φ = 20103216.

The previous prime is 20134423. The next prime is 20134463. The reversal of 20134427 is 72443102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20134427 - 2² = 20134423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20134423) 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 3 ways as a sum of consecutive naturals, for example, 14618 + ... + 15935.

It is an arithmetic number, because the mean of its divisors is an integer number (5041410).

Almost surely, 2^20134427 is an apocalyptic number.

20134427 is a deficient number, since it is larger than the sum of its proper divisors (31213).

20134427 is an equidigital number, since it uses as much as digits as its factorization.

20134427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31212.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 20134427 is about 4487.1401805604. The cubic root of 20134427 is about 272.0485558861.

Adding to 20134427 its reverse (72443102), we get a palindrome (92577529).

The spelling of 20134427 in words is "twenty million, one hundred thirty-four thousand, four hundred twenty-seven".