20424134 has 8 divisors (see below), whose sum is σ = 30697920. Its totient is φ = 10191496.

The previous prime is 20424113. The next prime is 20424137. The reversal of 20424134 is 43142402.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20424137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9014 + ... + 11049.

It is an arithmetic number, because the mean of its divisors is an integer number (3837240).

Almost surely, 2^20424134 is an apocalyptic number.

20424134 is a deficient number, since it is larger than the sum of its proper divisors (10273786).

20424134 is a wasteful number, since it uses less digits than its factorization.

20424134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20574.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 20424134 is about 4519.3068052523. The cubic root of 20424134 is about 273.3471501377.

Adding to 20424134 its reverse (43142402), we get a palindrome (63566536).

The spelling of 20424134 in words is "twenty million, four hundred twenty-four thousand, one hundred thirty-four".