7139061247 has 4 divisors (see below), whose sum is σ = 7139298096. Its totient is φ = 7138824400.

The previous prime is 7139061239. The next prime is 7139061263. The reversal of 7139061247 is 7421609317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7421609317 = 353 ⋅21024389.

It is a cyclic number.

It is not a de Polignac number, because 7139061247 - 2³ = 7139061239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7139061847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65254 + ... + 136147.

It is an arithmetic number, because the mean of its divisors is an integer number (1784824524).

Almost surely, 2^7139061247 is an apocalyptic number.

7139061247 is a deficient number, since it is larger than the sum of its proper divisors (236849).

7139061247 is a wasteful number, since it uses less digits than its factorization.

7139061247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236848.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 7139061247 is about 84492.9656657878. The cubic root of 7139061247 is about 1925.5155753541.

The spelling of 7139061247 in words is "seven billion, one hundred thirty-nine million, sixty-one thousand, two hundred forty-seven".