40513123 has 8 divisors (see below), whose sum is σ = 46378080. Its totient is φ = 34667520.

The previous prime is 40513061. The next prime is 40513133. The reversal of 40513123 is 32131504.

40513123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40513123 - 2⁹ = 40512611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40513123.

It is not an unprimeable number, because it can be changed into a prime (40513133) 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 7 ways as a sum of consecutive naturals, for example, 28 + ... + 9001.

It is an arithmetic number, because the mean of its divisors is an integer number (5797260).

Almost surely, 2^40513123 is an apocalyptic number.

40513123 is a deficient number, since it is larger than the sum of its proper divisors (5864957).

40513123 is an equidigital number, since it uses as much as digits as its factorization.

40513123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9677.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 40513123 is about 6364.9919874262. The cubic root of 40513123 is about 343.4513603284.

Adding to 40513123 its reverse (32131504), we get a palindrome (72644627).

The spelling of 40513123 in words is "forty million, five hundred thirteen thousand, one hundred twenty-three".