4001055123 has 16 divisors (see below), whose sum is σ = 5756119040. Its totient is φ = 2457467424.

The previous prime is 4001055103. The next prime is 4001055133. The reversal of 4001055123 is 3215501004.

It is not a de Polignac number, because 4001055123 - 2⁶ = 4001055059 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4001055123.

It is not an unprimeable number, because it can be changed into a prime (4001055103) 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, 77683 + ... + 118476.

It is an arithmetic number, because the mean of its divisors is an integer number (359757440).

Almost surely, 2^4001055123 is an apocalyptic number.

4001055123 is a deficient number, since it is larger than the sum of its proper divisors (1755063917).

4001055123 is a wasteful number, since it uses less digits than its factorization.

4001055123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196698.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 4001055123 is about 63253.8941330888. The cubic root of 4001055123 is about 1587.5406149776.

Adding to 4001055123 its reverse (3215501004), we get a palindrome (7216556127).

The spelling of 4001055123 in words is "four billion, one million, fifty-five thousand, one hundred twenty-three".