40128041 has 8 divisors (see below), whose sum is σ = 42729120. Its totient is φ = 37553728.

The previous prime is 40128037. The next prime is 40128061. The reversal of 40128041 is 14082104.

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 40128041 - 2² = 40128037 is a prime.

It is a super-2 number, since 2×40128041² = 3220519348995362, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40128001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3551 + ... + 9636.

It is an arithmetic number, because the mean of its divisors is an integer number (5341140).

Almost surely, 2^40128041 is an apocalyptic number.

It is an amenable number.

40128041 is a deficient number, since it is larger than the sum of its proper divisors (2601079).

40128041 is a wasteful number, since it uses less digits than its factorization.

40128041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13383.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 40128041 is about 6334.6697625054. The cubic root of 40128041 is about 342.3597123794.

The spelling of 40128041 in words is "forty million, one hundred twenty-eight thousand, forty-one".