40022171 has 6 divisors (see below), whose sum is σ = 46556460. Its totient is φ = 34304676.

The previous prime is 40022153. The next prime is 40022219. The reversal of 40022171 is 17122004.

It is not a de Polignac number, because 40022171 - 2⁶ = 40022107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40022071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 408341 + ... + 408438.

It is an arithmetic number, because the mean of its divisors is an integer number (7759410).

Almost surely, 2^40022171 is an apocalyptic number.

40022171 is a deficient number, since it is larger than the sum of its proper divisors (6534289).

40022171 is an equidigital number, since it uses as much as digits as its factorization.

40022171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816793 (or 816786 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 40022171 is about 6326.3078489748. The cubic root of 40022171 is about 342.0583641259.

Adding to 40022171 its reverse (17122004), we get a palindrome (57144175).

The spelling of 40022171 in words is "forty million, twenty-two thousand, one hundred seventy-one".