40020242020 has 48 divisors (see below), whose sum is σ = 92590537536. Its totient is φ = 14408720000.

The previous prime is 40020241997. The next prime is 40020242039. The reversal of 40020242020 is 2024202004.

It is a junction number, because it is equal to n+sod(n) for n = 40020241985 and 40020242003.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 878326 + ... + 922765.

It is an arithmetic number, because the mean of its divisors is an integer number (1928969532).

Almost surely, 2^40020242020 is an apocalyptic number.

It is an amenable number.

40020242020 is an abundant number, since it is smaller than the sum of its proper divisors (52570295516).

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

40020242020 is a wasteful number, since it uses less digits than its factorization.

40020242020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801212 (or 1801210 counting only the distinct ones).

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

Adding to 40020242020 its reverse (2024202004), we get a palindrome (42044444024).

The spelling of 40020242020 in words is "forty billion, twenty million, two hundred forty-two thousand, twenty".