40878123 has 16 divisors (see below), whose sum is σ = 64033536. Its totient is φ = 22868640.

The previous prime is 40878121. The next prime is 40878127. The reversal of 40878123 is 32187804.

40878123 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 40878123 - 2¹ = 40878121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (40878121) 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 15 ways as a sum of consecutive naturals, for example, 47215 + ... + 48072.

It is an arithmetic number, because the mean of its divisors is an integer number (4002096).

Almost surely, 2^40878123 is an apocalyptic number.

40878123 is a deficient number, since it is larger than the sum of its proper divisors (23155413).

40878123 is a wasteful number, since it uses less digits than its factorization.

40878123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95314.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 40878123 is about 6393.6001595345. The cubic root of 40878123 is about 344.4797114504.

It can be divided in two parts, 408781 and 23, that added together give a palindrome (408804).

The spelling of 40878123 in words is "forty million, eight hundred seventy-eight thousand, one hundred twenty-three".