40124220113 has 4 divisors (see below), whose sum is σ = 41507813940. Its totient is φ = 38740626288.

The previous prime is 40124220091. The next prime is 40124220181. The reversal of 40124220113 is 31102242104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9854135824 + 30270084289 = 99268^2 + 173983^2 .

It is a cyclic number.

It is not a de Polignac number, because 40124220113 - 2¹⁴ = 40124203729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40124220193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 691796870 + ... + 691796927.

It is an arithmetic number, because the mean of its divisors is an integer number (10376953485).

Almost surely, 2^40124220113 is an apocalyptic number.

It is an amenable number.

40124220113 is a deficient number, since it is larger than the sum of its proper divisors (1383593827).

40124220113 is a wasteful number, since it uses less digits than its factorization.

40124220113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383593826.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 40124220113 its reverse (31102242104), we get a palindrome (71226462217).

The spelling of 40124220113 in words is "forty billion, one hundred twenty-four million, two hundred twenty thousand, one hundred thirteen".