20420210342 has 8 divisors (see below), whose sum is σ = 35006074896. Its totient is φ = 8751518712.

The previous prime is 20420210341. The next prime is 20420210381. The reversal of 20420210342 is 24301202402.

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 (20420210341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 729293213 + ... + 729293240.

It is an arithmetic number, because the mean of its divisors is an integer number (4375759362).

Almost surely, 2^20420210342 is an apocalyptic number.

20420210342 is a deficient number, since it is larger than the sum of its proper divisors (14585864554).

20420210342 is a wasteful number, since it uses less digits than its factorization.

20420210342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458586462.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20420210342 its reverse (24301202402), we get a palindrome (44721412744).

The spelling of 20420210342 in words is "twenty billion, four hundred twenty million, two hundred ten thousand, three hundred forty-two".