20040020002420 has 72 divisors (see below), whose sum is σ = 46492477598952. Its totient is φ = 7250288559360.

The previous prime is 20040020002411. The next prime is 20040020002507. The reversal of 20040020002420 is 2420002004002.

It can be written as a sum of positive squares in 4 ways, for example, as 13533378143076 + 6506641859344 = 3678774^2 + 2550812^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20040020002394 and 20040020002403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20541027 + ... + 21494506.

It is an arithmetic number, because the mean of its divisors is an integer number (645728855541).

Almost surely, 2^{20040020002420} is an apocalyptic number.

20040020002420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20040020002420 is an abundant number, since it is smaller than the sum of its proper divisors (26452457596532).

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

20040020002420 is a wasteful number, since it uses less digits than its factorization.

20040020002420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42035761 (or 42035748 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 20040020002420 its reverse (2420002004002), we get a palindrome (22460022006422).

It can be divided in two parts, 2004002000 and 2420, that multiplied together give a square (4849684840000 = 2202200²).

The spelling of 20040020002420 in words is "twenty trillion, forty billion, twenty million, two thousand, four hundred twenty".