7085729123 has 16 divisors (see below), whose sum is σ = 7999832160. Its totient is φ = 6216806400.

The previous prime is 7085729099. The next prime is 7085729137. The reversal of 7085729123 is 3219275807.

It is a cyclic number.

It is not a de Polignac number, because 7085729123 - 2¹² = 7085725027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7085729023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1426961 + ... + 1431917.

It is an arithmetic number, because the mean of its divisors is an integer number (499989510).

Almost surely, 2^7085729123 is an apocalyptic number.

7085729123 is a deficient number, since it is larger than the sum of its proper divisors (914103037).

7085729123 is a wasteful number, since it uses less digits than its factorization.

7085729123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9478.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 7085729123 is about 84176.7730612192. The cubic root of 7085729123 is about 1920.7087519194.

The spelling of 7085729123 in words is "seven billion, eighty-five million, seven hundred twenty-nine thousand, one hundred twenty-three".