40121017 has 4 divisors (see below), whose sum is σ = 40311376. Its totient is φ = 39930660.

The previous prime is 40121009. The next prime is 40121023. The reversal of 40121017 is 71012104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40121017 - 2³ = 40121009 is a prime.

It is a super-2 number, since 2×40121017² = 3219392010228578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40121057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94863 + ... + 95284.

It is an arithmetic number, because the mean of its divisors is an integer number (10077844).

Almost surely, 2^40121017 is an apocalyptic number.

It is an amenable number.

40121017 is a deficient number, since it is larger than the sum of its proper divisors (190359).

40121017 is a wasteful number, since it uses less digits than its factorization.

40121017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190358.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 40121017 is about 6334.1153289153. The cubic root of 40121017 is about 342.3397357008.

The spelling of 40121017 in words is "forty million, one hundred twenty-one thousand, seventeen".