20201343142 has 4 divisors (see below), whose sum is σ = 30302014716. Its totient is φ = 10100671570.

The previous prime is 20201343137. The next prime is 20201343179. The reversal of 20201343142 is 24134310202.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050335784 + ... + 5050335787.

It is an arithmetic number, because the mean of its divisors is an integer number (7575503679).

Almost surely, 2^20201343142 is an apocalyptic number.

20201343142 is a deficient number, since it is larger than the sum of its proper divisors (10100671574).

20201343142 is a wasteful number, since it uses less digits than its factorization.

20201343142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10100671573.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20201343142 its reverse (24134310202), we get a palindrome (44335653344).

The spelling of 20201343142 in words is "twenty billion, two hundred one million, three hundred forty-three thousand, one hundred forty-two".