41778021 has 8 divisors (see below), whose sum is σ = 56197440. Its totient is φ = 27605312.

The previous prime is 41777999. The next prime is 41778029. The reversal of 41778021 is 12087714.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 41778021 - 2⁹ = 41777509 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 41778021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41778029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61281 + ... + 61958.

It is an arithmetic number, because the mean of its divisors is an integer number (7024680).

Almost surely, 2^41778021 is an apocalyptic number.

It is an amenable number.

41778021 is a deficient number, since it is larger than the sum of its proper divisors (14419419).

41778021 is a wasteful number, since it uses less digits than its factorization.

41778021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123355.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 41778021 is about 6463.5919580370. The cubic root of 41778021 is about 346.9891975919.

The spelling of 41778021 in words is "forty-one million, seven hundred seventy-eight thousand, twenty-one".