20420402020004 has 48 divisors (see below), whose sum is σ = 41080853721600. Its totient is φ = 8700285167616.

The previous prime is 20420402019943. The next prime is 20420402020009. The reversal of 20420402020004 is 40002020402402.

It is not an unprimeable number, because it can be changed into a prime (20420402020009) 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, 1395452 + ... + 6541260.

It is an arithmetic number, because the mean of its divisors is an integer number (855851119200).

Almost surely, 2^{20420402020004} is an apocalyptic number.

It is an amenable number.

20420402020004 is an abundant number, since it is smaller than the sum of its proper divisors (20660451701596).

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

20420402020004 is a wasteful number, since it uses less digits than its factorization.

20420402020004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5146652 (or 5146650 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20420402020004 its reverse (40002020402402), we get a palindrome (60422422422406).

The spelling of 20420402020004 in words is "twenty trillion, four hundred twenty billion, four hundred two million, twenty thousand, four".