40544121 has 8 divisors (see below), whose sum is σ = 55377504. Its totient is φ = 26370080.

The previous prime is 40544111. The next prime is 40544129. The reversal of 40544121 is 12144504.

It is a happy number.

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 40544121 - 2⁶ = 40544057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40544129) 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, 164691 + ... + 164936.

It is an arithmetic number, because the mean of its divisors is an integer number (6922188).

Almost surely, 2^40544121 is an apocalyptic number.

40544121 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

40544121 is a deficient number, since it is larger than the sum of its proper divisors (14833383).

40544121 is a wasteful number, since it uses less digits than its factorization.

40544121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329671.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 40544121 is about 6367.4265602361. The cubic root of 40544121 is about 343.5389335257.

Adding to 40544121 its reverse (12144504), we get a palindrome (52688625).

The spelling of 40544121 in words is "forty million, five hundred forty-four thousand, one hundred twenty-one".