40122005 has 48 divisors (see below), whose sum is σ = 63068544. Its totient is φ = 23802240.

The previous prime is 40121999. The next prime is 40122031. The reversal of 40122005 is 50022104.

It is not a de Polignac number, because 40122005 - 2⁶ = 40121941 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 203567 + ... + 203763.

It is an arithmetic number, because the mean of its divisors is an integer number (1313928).

Almost surely, 2^40122005 is an apocalyptic number.

It is an amenable number.

40122005 is a deficient number, since it is larger than the sum of its proper divisors (22946539).

40122005 is a wasteful number, since it uses less digits than its factorization.

40122005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 40122005 is about 6334.1933188055. The cubic root of 40122005 is about 342.3425457731.

Adding to 40122005 its reverse (50022104), we get a palindrome (90144109).

Subtracting 40122005 from its reverse (50022104), we obtain a palindrome (9900099).

The spelling of 40122005 in words is "forty million, one hundred twenty-two thousand, five".