41139840 has 128 divisors (see below), whose sum is σ = 149915520. Its totient is φ = 9400320.

The previous prime is 41139829. The next prime is 41139841. The reversal of 41139840 is 4893114.

It is a happy number.

41139840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 41139798 and 41139807.

It is not an unprimeable number, because it can be changed into a prime (41139841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11910 + ... + 14970.

It is an arithmetic number, because the mean of its divisors is an integer number (1171215).

Almost surely, 2^41139840 is an apocalyptic number.

41139840 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 41139840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74957760).

41139840 is an abundant number, since it is smaller than the sum of its proper divisors (108775680).

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

41139840 is a wasteful number, since it uses less digits than its factorization.

41139840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3090 (or 3078 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 41139840 is about 6414.0346116933. The cubic root of 41139840 is about 345.2133106387.

The spelling of 41139840 in words is "forty-one million, one hundred thirty-nine thousand, eight hundred forty".