7146142785 has 72 divisors (see below), whose sum is σ = 13279209216. Its totient is φ = 3687806880.

The previous prime is 7146142769. The next prime is 7146142823. The reversal of 7146142785 is 5872416417.

7146142785 is a `hidden beast` number, since 7 + 1 + 4 + 614 + 27 + 8 + 5 = 666.

It is not a de Polignac number, because 7146142785 - 2⁴ = 7146142769 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 7146142785.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1013442 + ... + 1020468.

Almost surely, 2^7146142785 is an apocalyptic number.

It is an amenable number.

7146142785 is a deficient number, since it is larger than the sum of its proper divisors (6133066431).

7146142785 is an frugal number, since it uses more digits than its factorization.

7146142785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7087 (or 7066 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 7146142785 is about 84534.8613590866. The cubic root of 7146142785 is about 1926.1520318454.

The spelling of 7146142785 in words is "seven billion, one hundred forty-six million, one hundred forty-two thousand, seven hundred eighty-five".