6742185139 has 2 divisors, whose sum is σ = 6742185140. Its totient is φ = 6742185138.

The previous prime is 6742185119. The next prime is 6742185211. The reversal of 6742185139 is 9315812476.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6742185139 - 2⁹ = 6742184627 is a prime.

It is not a weakly prime, because it can be changed into another prime (6742185119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3371092569 + 3371092570.

It is an arithmetic number, because the mean of its divisors is an integer number (3371092570).

Almost surely, 2^6742185139 is an apocalyptic number.

6742185139 is a deficient number, since it is larger than the sum of its proper divisors (1).

6742185139 is an equidigital number, since it uses as much as digits as its factorization.

6742185139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 46.

The square root of 6742185139 is about 82110.8101226629. The cubic root of 6742185139 is about 1889.1519518703.

The spelling of 6742185139 in words is "six billion, seven hundred forty-two million, one hundred eighty-five thousand, one hundred thirty-nine".