6742129 has 4 divisors (see below), whose sum is σ = 6758640. Its totient is φ = 6725620.

The previous prime is 6742117. The next prime is 6742171. The reversal of 6742129 is 9212476.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6742129 - 2⁹ = 6741617 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6742129.

It is not an unprimeable number, because it can be changed into a prime (6742189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7627 + ... + 8464.

It is an arithmetic number, because the mean of its divisors is an integer number (1689660).

Almost surely, 2^6742129 is an apocalyptic number.

It is an amenable number.

6742129 is a deficient number, since it is larger than the sum of its proper divisors (16511).

6742129 is a wasteful number, since it uses less digits than its factorization.

6742129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16510.

The product of its digits is 6048, while the sum is 31.

The square root of 6742129 is about 2596.5609948545. The cubic root of 6742129 is about 188.9146708496.

The spelling of 6742129 in words is "six million, seven hundred forty-two thousand, one hundred twenty-nine".