40123111104 has 112 divisors (see below), whose sum is σ = 119100234240. Its totient is φ = 13244463360.

The previous prime is 40123111103. The next prime is 40123111201. The reversal of 40123111104 is 40111132104.

It is a super-4 number, since 4×40123111104⁴ (a number of 44 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 15 ways as a sum of consecutive naturals, for example, 65269 + ... + 290699.

Almost surely, 2^40123111104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40123111104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59550117120).

40123111104 is an abundant number, since it is smaller than the sum of its proper divisors (78977123136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40123111104 is a wasteful number, since it uses less digits than its factorization.

40123111104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225555 (or 225539 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 40123111104 its reverse (40111132104), we get a palindrome (80234243208).

The spelling of 40123111104 in words is "forty billion, one hundred twenty-three million, one hundred eleven thousand, one hundred four".