40122020 has 24 divisors (see below), whose sum is σ = 86050944. Its totient is φ = 15706976.

The previous prime is 40121999. The next prime is 40122031. The reversal of 40122020 is 2022104.

It is a junction number, because it is equal to n+sod(n) for n = 40121992 and 40122010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20402 + ... + 22281.

It is an arithmetic number, because the mean of its divisors is an integer number (3585456).

Almost surely, 2^40122020 is an apocalyptic number.

It is an amenable number.

40122020 is an abundant number, since it is smaller than the sum of its proper divisors (45928924).

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

40122020 is a wasteful number, since it uses less digits than its factorization.

40122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42739 (or 42737 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 40122020 is about 6334.1945028551. The cubic root of 40122020 is about 342.3425884358.

Adding to 40122020 its reverse (2022104), we get a palindrome (42144124).

The spelling of 40122020 in words is "forty million, one hundred twenty-two thousand, twenty".