40021941 has 8 divisors (see below), whose sum is σ = 53770464. Its totient is φ = 26477360.

The previous prime is 40021937. The next prime is 40021951. The reversal of 40021941 is 14912004.

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 40021941 - 2² = 40021937 is a prime.

It is a super-2 number, since 2×40021941² = 3203511522814962, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40021931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50526 + ... + 51311.

It is an arithmetic number, because the mean of its divisors is an integer number (6721308).

Almost surely, 2^40021941 is an apocalyptic number.

It is an amenable number.

40021941 is a deficient number, since it is larger than the sum of its proper divisors (13748523).

40021941 is a wasteful number, since it uses less digits than its factorization.

40021941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101971.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 40021941 is about 6326.2896708892. The cubic root of 40021941 is about 342.0577088760.

Adding to 40021941 its reverse (14912004), we get a palindrome (54933945).

The spelling of 40021941 in words is "forty million, twenty-one thousand, nine hundred forty-one".