2742905 has 8 divisors (see below), whose sum is σ = 3590784. Its totient is φ = 1994800.

The previous prime is 2742893. The next prime is 2742917. The reversal of 2742905 is 5092472.

It is an interprime number because it is at equal distance from previous prime (2742893) and next prime (2742917).

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

It is not a de Polignac number, because 2742905 - 2⁴ = 2742889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24881 + ... + 24990.

It is an arithmetic number, because the mean of its divisors is an integer number (448848).

2^2742905 is an apocalyptic number.

It is an amenable number.

2742905 is a deficient number, since it is larger than the sum of its proper divisors (847879).

2742905 is a wasteful number, since it uses less digits than its factorization.

2742905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49887.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 2742905 is about 1656.1717906063. The cubic root of 2742905 is about 139.9813750734.

The spelling of 2742905 in words is "two million, seven hundred forty-two thousand, nine hundred five".