2142709 has 8 divisors (see below), whose sum is σ = 2201472. Its totient is φ = 2084880.

The previous prime is 2142691. The next prime is 2142713. The reversal of 2142709 is 9072412.

2142709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2142709 - 2⁵ = 2142677 is a prime.

It is a Duffinian number.

2142709 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142719) 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 7 ways as a sum of consecutive naturals, for example, 7167 + ... + 7459.

It is an arithmetic number, because the mean of its divisors is an integer number (275184).

2^2142709 is an apocalyptic number.

It is an amenable number.

2142709 is a deficient number, since it is larger than the sum of its proper divisors (58763).

2142709 is a wasteful number, since it uses less digits than its factorization.

2142709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 2142709 is about 1463.7995081294. The cubic root of 2142709 is about 128.9202279070.

The spelling of 2142709 in words is "two million, one hundred forty-two thousand, seven hundred nine".