20134442 has 4 divisors (see below), whose sum is σ = 30201666. Its totient is φ = 10067220.

The previous prime is 20134423. The next prime is 20134463. The reversal of 20134442 is 24443102.

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

It can be written as a sum of positive squares in only one way, i.e., 18498601 + 1635841 = 4301^2 + 1279^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5033609 + ... + 5033612.

Almost surely, 2^20134442 is an apocalyptic number.

20134442 is a deficient number, since it is larger than the sum of its proper divisors (10067224).

20134442 is a wasteful number, since it uses less digits than its factorization.

20134442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10067223.

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

The square root of 20134442 is about 4487.1418520033. The cubic root of 20134442 is about 272.0486234441.

Adding to 20134442 its reverse (24443102), we get a palindrome (44577544).

It can be divided in two parts, 201 and 34442, that added together give a palindrome (34643).

The spelling of 20134442 in words is "twenty million, one hundred thirty-four thousand, four hundred forty-two".