20342134 has 4 divisors (see below), whose sum is σ = 30513204. Its totient is φ = 10171066.

The previous prime is 20342131. The next prime is 20342167. The reversal of 20342134 is 43124302.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20342131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5085532 + ... + 5085535.

It is an arithmetic number, because the mean of its divisors is an integer number (7628301).

Almost surely, 2^20342134 is an apocalyptic number.

20342134 is a deficient number, since it is larger than the sum of its proper divisors (10171070).

20342134 is a wasteful number, since it uses less digits than its factorization.

20342134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10171069.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 20342134 is about 4510.2254932542. The cubic root of 20342134 is about 272.9808428014.

Adding to 20342134 its reverse (43124302), we get a palindrome (63466436).

The spelling of 20342134 in words is "twenty million, three hundred forty-two thousand, one hundred thirty-four".