1240415523123 has 16 divisors (see below), whose sum is σ = 1972337726976. Its totient is φ = 677991093120.

The previous prime is 1240415523071. The next prime is 1240415523143. The reversal of 1240415523123 is 3213255140421.

It is not a de Polignac number, because 1240415523123 - 2⁹ = 1240415522611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1240415523143) 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, 1284073558 + ... + 1284074523.

It is an arithmetic number, because the mean of its divisors is an integer number (123271107936).

Almost surely, 2^{1240415523123} is an apocalyptic number.

1240415523123 is a deficient number, since it is larger than the sum of its proper divisors (731922203853).

1240415523123 is a wasteful number, since it uses less digits than its factorization.

1240415523123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568148114.

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 1240415523123 in words is "one trillion, two hundred forty billion, four hundred fifteen million, five hundred twenty-three thousand, one hundred twenty-three".