20143234 has 4 divisors (see below), whose sum is σ = 30214854. Its totient is φ = 10071616.

The previous prime is 20143231. The next prime is 20143241. The reversal of 20143234 is 43234102.

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., 17430625 + 2712609 = 4175^2 + 1647^2 .

It is not an unprimeable number, because it can be changed into a prime (20143231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5035807 + ... + 5035810.

Almost surely, 2^20143234 is an apocalyptic number.

20143234 is a deficient number, since it is larger than the sum of its proper divisors (10071620).

20143234 is a wasteful number, since it uses less digits than its factorization.

20143234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10071619.

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

The square root of 20143234 is about 4488.1214332948. The cubic root of 20143234 is about 272.0882156917.

Adding to 20143234 its reverse (43234102), we get a palindrome (63377336).

The spelling of 20143234 in words is "twenty million, one hundred forty-three thousand, two hundred thirty-four".