20053142 has 4 divisors (see below), whose sum is σ = 30079716. Its totient is φ = 10026570.

The previous prime is 20053129. The next prime is 20053147. The reversal of 20053142 is 24135002.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20053142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20053147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5013284 + ... + 5013287.

It is an arithmetic number, because the mean of its divisors is an integer number (7519929).

Almost surely, 2^20053142 is an apocalyptic number.

20053142 is a deficient number, since it is larger than the sum of its proper divisors (10026574).

20053142 is a wasteful number, since it uses less digits than its factorization.

20053142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10026573.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 20053142 is about 4478.0734696965. The cubic root of 20053142 is about 271.6819650051.

Adding to 20053142 its reverse (24135002), we get a palindrome (44188144).

The spelling of 20053142 in words is "twenty million, fifty-three thousand, one hundred forty-two".