20420402032434 has 32 divisors (see below), whose sum is σ = 40933748520000. Its totient is φ = 6791311407104.

The previous prime is 20420402032411. The next prime is 20420402032439. The reversal of 20420402032434 is 43423020402402.

It is not an unprimeable number, because it can be changed into a prime (20420402032439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58903897 + ... + 59249555.

It is an arithmetic number, because the mean of its divisors is an integer number (1279179641250).

Almost surely, 2^{20420402032434} is an apocalyptic number.

20420402032434 is an abundant number, since it is smaller than the sum of its proper divisors (20513346487566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20420402032434 is a wasteful number, since it uses less digits than its factorization.

20420402032434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368042.

The product of its (nonzero) digits is 36864, while the sum is 30.

Adding to 20420402032434 its reverse (43423020402402), we get a palindrome (63843422434836).

The spelling of 20420402032434 in words is "twenty trillion, four hundred twenty billion, four hundred two million, thirty-two thousand, four hundred thirty-four".