1245115073 has 8 divisors (see below), whose sum is σ = 1267569000. Its totient is φ = 1222849408.

The previous prime is 1245115063. The next prime is 1245115099. The reversal of 1245115073 is 3705115421.

It can be written as a sum of positive squares in 4 ways, for example, as 95023504 + 1150091569 = 9748^2 + 33913^2 .

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 1245115073 - 2¹⁴ = 1245098689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1245115013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33686 + ... + 60207.

It is an arithmetic number, because the mean of its divisors is an integer number (158446125).

Almost surely, 2^1245115073 is an apocalyptic number.

It is an amenable number.

1245115073 is a deficient number, since it is larger than the sum of its proper divisors (22453927).

1245115073 is an equidigital number, since it uses as much as digits as its factorization.

1245115073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94131.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 1245115073 is about 35286.1881336026. The cubic root of 1245115073 is about 1075.8122789597.

The spelling of 1245115073 in words is "one billion, two hundred forty-five million, one hundred fifteen thousand, seventy-three".