2705842 has 4 divisors (see below), whose sum is σ = 4058766. Its totient is φ = 1352920.

The previous prime is 2705831. The next prime is 2705849. The reversal of 2705842 is 2485072.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2621161 + 84681 = 1619^2 + 291^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2705842.

It is not an unprimeable number, because it can be changed into a prime (2705849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 676459 + ... + 676462.

2^2705842 is an apocalyptic number.

2705842 is a deficient number, since it is larger than the sum of its proper divisors (1352924).

2705842 is a wasteful number, since it uses less digits than its factorization.

2705842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352923.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 2705842 is about 1644.9443759593. The cubic root of 2705842 is about 139.3480228911.

The spelling of 2705842 in words is "two million, seven hundred five thousand, eight hundred forty-two".