7145394273 has 12 divisors (see below), whose sum is σ = 10322100880. Its totient is φ = 4763145816.

The previous prime is 7145394251. The next prime is 7145394313. The reversal of 7145394273 is 3724935417.

7145394273 is a `hidden beast` number, since 7 + 1 + 4 + 539 + 42 + 73 = 666.

It is not a de Polignac number, because 7145394273 - 2⁶ = 7145394209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7145394173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83490 + ... + 145812.

Almost surely, 2^7145394273 is an apocalyptic number.

It is an amenable number.

7145394273 is a deficient number, since it is larger than the sum of its proper divisors (3176706607).

7145394273 is a wasteful number, since it uses less digits than its factorization.

7145394273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75068 (or 75065 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The square root of 7145394273 is about 84530.4340045643. The cubic root of 7145394273 is about 1926.0847788628.

The spelling of 7145394273 in words is "seven billion, one hundred forty-five million, three hundred ninety-four thousand, two hundred seventy-three".