20134242 has 12 divisors (see below), whose sum is σ = 43624230. Its totient is φ = 6711408.

The previous prime is 20134241. The next prime is 20134291. The reversal of 20134242 is 24243102.

It can be written as a sum of positive squares in only one way, i.e., 16818201 + 3316041 = 4101^2 + 1821^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1118569 = 20134242 / (2 + 0 + 1 + 3 + 4 + 2 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (20134241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 559267 + ... + 559302.

Almost surely, 2^20134242 is an apocalyptic number.

20134242 is an abundant number, since it is smaller than the sum of its proper divisors (23489988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20134242 is a wasteful number, since it uses less digits than its factorization.

20134242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118577 (or 1118574 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 20134242 is about 4487.1195660468. The cubic root of 20134242 is about 272.0477226675.

Adding to 20134242 its reverse (24243102), we get a palindrome (44377344).

It can be divided in two parts, 201 and 34242, that added together give a palindrome (34443).

The spelling of 20134242 in words is "twenty million, one hundred thirty-four thousand, two hundred forty-two".