20713142 has 8 divisors (see below), whose sum is σ = 31656096. Its totient is φ = 10161112.

The previous prime is 20713141. The next prime is 20713153. The reversal of 20713142 is 24131702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20713141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97598 + ... + 97809.

It is an arithmetic number, because the mean of its divisors is an integer number (3957012).

Almost surely, 2^20713142 is an apocalyptic number.

20713142 is a deficient number, since it is larger than the sum of its proper divisors (10942954).

20713142 is a wasteful number, since it uses less digits than its factorization.

20713142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195462.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 20713142 is about 4551.1693003007. The cubic root of 20713142 is about 274.6304324930.

Adding to 20713142 its reverse (24131702), we get a palindrome (44844844).

The spelling of 20713142 in words is "twenty million, seven hundred thirteen thousand, one hundred forty-two".