2542666 has 8 divisors (see below), whose sum is σ = 4358880. Its totient is φ = 1089708.

The previous prime is 2542649. The next prime is 2542669. The reversal of 2542666 is 6662452.

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

It is not an unprimeable number, because it can be changed into a prime (2542669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90796 + ... + 90823.

It is an arithmetic number, because the mean of its divisors is an integer number (544860).

2^2542666 is an apocalyptic number.

2542666 is a deficient number, since it is larger than the sum of its proper divisors (1816214).

2542666 is a wasteful number, since it uses less digits than its factorization.

2542666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181628.

The product of its digits is 17280, while the sum is 31.

The square root of 2542666 is about 1594.5739242820. The cubic root of 2542666 is about 136.4886186935.

The spelling of 2542666 in words is "two million, five hundred forty-two thousand, six hundred sixty-six".