40820120 has 64 divisors (see below), whose sum is σ = 101204640. Its totient is φ = 14694400.

The previous prime is 40820119. The next prime is 40820141. The reversal of 40820120 is 2102804.

It is a congruent number.

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, 49310 + ... + 50130.

Almost surely, 2^40820120 is an apocalyptic number.

40820120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40820120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50602320).

40820120 is an abundant number, since it is smaller than the sum of its proper divisors (60384520).

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

40820120 is a wasteful number, since it uses less digits than its factorization.

40820120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956 (or 952 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 40820120 is about 6389.0625290413. The cubic root of 40820120 is about 344.3167040099.

Adding to 40820120 its reverse (2102804), we get a palindrome (42922924).

The spelling of 40820120 in words is "forty million, eight hundred twenty thousand, one hundred twenty".