1045123007405 has 16 divisors (see below), whose sum is σ = 1328358573360. Its totient is φ = 786656842752.

The previous prime is 1045123007399. The next prime is 1045123007443. The reversal of 1045123007405 is 5047003215401.

It can be written as a sum of positive squares in 8 ways, for example, as 953759689 + 1044169247716 = 30883^2 + 1021846^2 .

It is a cyclic number.

It is not a de Polignac number, because 1045123007405 - 2¹⁰ = 1045123006381 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1766150 + ... + 2282439.

It is an arithmetic number, because the mean of its divisors is an integer number (83022410835).

Almost surely, 2^{1045123007405} is an apocalyptic number.

It is an amenable number.

1045123007405 is a deficient number, since it is larger than the sum of its proper divisors (283235565955).

1045123007405 is a wasteful number, since it uses less digits than its factorization.

1045123007405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4051648.

The product of its (nonzero) digits is 16800, while the sum is 32.

The spelling of 1045123007405 in words is "one trillion, forty-five billion, one hundred twenty-three million, seven thousand, four hundred five".