2666742 has 32 divisors (see below), whose sum is σ = 5806080. Its totient is φ = 811680.

The previous prime is 2666717. The next prime is 2666743. The reversal of 2666742 is 2476662.

2666742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2666742² = 14223025789128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666743) 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 15 ways as a sum of consecutive naturals, for example, 13867 + ... + 14057.

It is an arithmetic number, because the mean of its divisors is an integer number (181440).

2^2666742 is an apocalyptic number.

2666742 is an abundant number, since it is smaller than the sum of its proper divisors (3139338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2666742 is a wasteful number, since it uses less digits than its factorization.

2666742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388.

The product of its digits is 24192, while the sum is 33.

The square root of 2666742 is about 1633.0162277210. The cubic root of 2666742 is about 138.6735606882.

The spelling of 2666742 in words is "two million, six hundred sixty-six thousand, seven hundred forty-two".