40042163 has 8 divisors (see below), whose sum is σ = 46696800. Its totient is φ = 34321560.

The previous prime is 40042153. The next prime is 40042181. The reversal of 40042163 is 36124004.

It is a happy number.

It is not a de Polignac number, because 40042163 - 2⁶ = 40042099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40042133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58028 + ... + 58713.

It is an arithmetic number, because the mean of its divisors is an integer number (5837100).

Almost surely, 2^40042163 is an apocalyptic number.

40042163 is a deficient number, since it is larger than the sum of its proper divisors (6654637).

40042163 is an equidigital number, since it uses as much as digits as its factorization.

40042163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116762 (or 116748 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 40042163 is about 6327.8877202428. The cubic root of 40042163 is about 342.1153099996.

Adding to 40042163 its reverse (36124004), we get a palindrome (76166167).

The spelling of 40042163 in words is "forty million, forty-two thousand, one hundred sixty-three".