1244106155123 has 16 divisors (see below), whose sum is σ = 1376160448320. Its totient is φ = 1117251709056.

The previous prime is 1244106155107. The next prime is 1244106155143. The reversal of 1244106155123 is 3215516014421.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1244106155123 - 2⁴ = 1244106155107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1244106155143) 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 15 ways as a sum of consecutive naturals, for example, 4684133 + ... + 4942601.

It is an arithmetic number, because the mean of its divisors is an integer number (86010028020).

Almost surely, 2^{1244106155123} is an apocalyptic number.

1244106155123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1244106155123 is a deficient number, since it is larger than the sum of its proper divisors (132054293197).

1244106155123 is a wasteful number, since it uses less digits than its factorization.

1244106155123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268526.

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 1244106155123 in words is "one trillion, two hundred forty-four billion, one hundred six million, one hundred fifty-five thousand, one hundred twenty-three".