20534343142 has 16 divisors (see below), whose sum is σ = 31911042240. Its totient is φ = 9898382592.

The previous prime is 20534343131. The next prime is 20534343149. The reversal of 20534343142 is 24134343502.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20534343149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223998 + ... + 302065.

It is an arithmetic number, because the mean of its divisors is an integer number (1994440140).

Almost surely, 2^20534343142 is an apocalyptic number.

20534343142 is a deficient number, since it is larger than the sum of its proper divisors (11376699098).

20534343142 is a wasteful number, since it uses less digits than its factorization.

20534343142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526767.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 20534343142 its reverse (24134343502), we get a palindrome (44668686644).

The spelling of 20534343142 in words is "twenty billion, five hundred thirty-four million, three hundred forty-three thousand, one hundred forty-two".