40042113 has 4 divisors (see below), whose sum is σ = 53389488. Its totient is φ = 26694740.

The previous prime is 40042109. The next prime is 40042129. The reversal of 40042113 is 31124004.

40042113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40042113 - 2² = 40042109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40042092 and 40042101.

It is not an unprimeable number, because it can be changed into a prime (40042133) 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 3 ways as a sum of consecutive naturals, for example, 6673683 + ... + 6673688.

It is an arithmetic number, because the mean of its divisors is an integer number (13347372).

Almost surely, 2^40042113 is an apocalyptic number.

It is an amenable number.

40042113 is a deficient number, since it is larger than the sum of its proper divisors (13347375).

40042113 is a wasteful number, since it uses less digits than its factorization.

40042113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13347374.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 40042113 is about 6327.8837694762. The cubic root of 40042113 is about 342.1151676015.

Adding to 40042113 its reverse (31124004), we get a palindrome (71166117).

The spelling of 40042113 in words is "forty million, forty-two thousand, one hundred thirteen".