1145120555245 has 8 divisors (see below), whose sum is σ = 1374258898584. Its totient is φ = 916020289344.

The previous prime is 1145120555197. The next prime is 1145120555279. The reversal of 1145120555245 is 5425550215411.

It can be written as a sum of positive squares in 4 ways, for example, as 10169108964 + 1134951446281 = 100842^2 + 1065341^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1145120555245 - 2³⁹ = 595364741357 is a prime.

It is a super-2 number, since 2×1145120555245² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1145120555198 and 1145120555207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9453154 + ... + 9573523.

It is an arithmetic number, because the mean of its divisors is an integer number (171782362323).

Almost surely, 2^{1145120555245} is an apocalyptic number.

It is an amenable number.

1145120555245 is a deficient number, since it is larger than the sum of its proper divisors (229138343339).

1145120555245 is a wasteful number, since it uses less digits than its factorization.

1145120555245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19038719.

The product of its (nonzero) digits is 200000, while the sum is 40.

The spelling of 1145120555245 in words is "one trillion, one hundred forty-five billion, one hundred twenty million, five hundred fifty-five thousand, two hundred forty-five".