20343142 has 8 divisors (see below), whose sum is σ = 30540600. Its totient is φ = 10162944.

The previous prime is 20343139. The next prime is 20343179. The reversal of 20343142 is 24134302.

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

It is a congruent number.

It is an unprimeable number.

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, 792 + ... + 6427.

It is an arithmetic number, because the mean of its divisors is an integer number (3817575).

Almost surely, 2^20343142 is an apocalyptic number.

20343142 is a deficient number, since it is larger than the sum of its proper divisors (10197458).

20343142 is a wasteful number, since it uses less digits than its factorization.

20343142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8630.

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

The square root of 20343142 is about 4510.3372379457. The cubic root of 20343142 is about 272.9853516719.

Adding to 20343142 its reverse (24134302), we get a palindrome (44477444).

The spelling of 20343142 in words is "twenty million, three hundred forty-three thousand, one hundred forty-two".