40122817 has 12 divisors (see below), whose sum is σ = 46785600. Its totient is φ = 34308456.

The previous prime is 40122809. The next prime is 40122821. The reversal of 40122817 is 71822104.

It is a happy number.

It is not a de Polignac number, because 40122817 - 2³ = 40122809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40122791 and 40122800.

It is not an unprimeable number, because it can be changed into a prime (40122847) 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 11 ways as a sum of consecutive naturals, for example, 28668 + ... + 30034.

It is an arithmetic number, because the mean of its divisors is an integer number (3898800).

Almost surely, 2^40122817 is an apocalyptic number.

It is an amenable number.

40122817 is a deficient number, since it is larger than the sum of its proper divisors (6662783).

40122817 is a wasteful number, since it uses less digits than its factorization.

40122817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980 (or 1973 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 40122817 is about 6334.2574150409. The cubic root of 40122817 is about 342.3448552313.

The spelling of 40122817 in words is "forty million, one hundred twenty-two thousand, eight hundred seventeen".