40212417 has 32 divisors (see below), whose sum is σ = 65228800. Its totient is φ = 21523968.

The previous prime is 40212413. The next prime is 40212427. The reversal of 40212417 is 71421204.

It is a happy number.

40212417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40212417 - 2² = 40212413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 40212393 and 40212402.

It is not an unprimeable number, because it can be changed into a prime (40212413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38184 + ... + 39222.

It is an arithmetic number, because the mean of its divisors is an integer number (2038400).

Almost surely, 2^40212417 is an apocalyptic number.

It is an amenable number.

40212417 is a deficient number, since it is larger than the sum of its proper divisors (25016383).

40212417 is a wasteful number, since it uses less digits than its factorization.

40212417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 40212417 is about 6341.3261231386. The cubic root of 40212417 is about 342.5995008119.

The spelling of 40212417 in words is "forty million, two hundred twelve thousand, four hundred seventeen".