2020004200040 has 32 divisors (see below), whose sum is σ = 4545725433480. Its totient is φ = 807874394112.

The previous prime is 2020004199991. The next prime is 2020004200061. The reversal of 2020004200040 is 400024000202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1112446935076 + 907557264964 = 1054726^2 + 952658^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2020004199988 and 2020004200024.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3720389 + ... + 4228628.

Almost surely, 2^{2020004200040} is an apocalyptic number.

2020004200040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020004200040 is an abundant number, since it is smaller than the sum of its proper divisors (2525721233440).

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

2020004200040 is a wasteful number, since it uses less digits than its factorization.

2020004200040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7955381 (or 7955377 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

Adding to 2020004200040 its reverse (400024000202), we get a palindrome (2420028200242).

The spelling of 2020004200040 in words is "two trillion, twenty billion, four million, two hundred thousand, forty".