40123111105 has 32 divisors (see below), whose sum is σ = 61305569280. Its totient is φ = 24479632320.

The previous prime is 40123111103. The next prime is 40123111201. The reversal of 40123111105 is 50111132104.

It is not a de Polignac number, because 40123111105 - 2¹ = 40123111103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40123111103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1090585 + ... + 1126774.

It is an arithmetic number, because the mean of its divisors is an integer number (1915799040).

Almost surely, 2^40123111105 is an apocalyptic number.

It is an amenable number.

40123111105 is a deficient number, since it is larger than the sum of its proper divisors (21182458175).

40123111105 is a wasteful number, since it uses less digits than its factorization.

40123111105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217429.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 40123111105 its reverse (50111132104), we get a palindrome (90234243209).

The spelling of 40123111105 in words is "forty billion, one hundred twenty-three million, one hundred eleven thousand, one hundred five".