20432420342 has 16 divisors (see below), whose sum is σ = 30913166592. Its totient is φ = 10128301800.

The previous prime is 20432420341. The next prime is 20432420353. The reversal of 20432420342 is 24302423402.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20432420341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84653 + ... + 219159.

It is an arithmetic number, because the mean of its divisors is an integer number (1932072912).

Almost surely, 2^20432420342 is an apocalyptic number.

20432420342 is a deficient number, since it is larger than the sum of its proper divisors (10480746250).

20432420342 is a wasteful number, since it uses less digits than its factorization.

20432420342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135163.

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 20432420342 its reverse (24302423402), we get a palindrome (44734843744).

The spelling of 20432420342 in words is "twenty billion, four hundred thirty-two million, four hundred twenty thousand, three hundred forty-two".