2742751 has 4 divisors (see below), whose sum is σ = 2992104. Its totient is φ = 2493400.

The previous prime is 2742749. The next prime is 2742757. The reversal of 2742751 is 1572472.

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

It is a cyclic number.

It is not a de Polignac number, because 2742751 - 2¹ = 2742749 is a prime.

It is an Ulam number.

It is a Duffinian number.

2742751 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2742757) 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, 124660 + ... + 124681.

It is an arithmetic number, because the mean of its divisors is an integer number (748026).

2^2742751 is an apocalyptic number.

2742751 is a deficient number, since it is larger than the sum of its proper divisors (249353).

2742751 is a wasteful number, since it uses less digits than its factorization.

2742751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249352.

The product of its digits is 3920, while the sum is 28.

The square root of 2742751 is about 1656.1252971922. The cubic root of 2742751 is about 139.9787552797.

It can be divided in two parts, 274 and 2751, that added together give a square (3025 = 55²).

The spelling of 2742751 in words is "two million, seven hundred forty-two thousand, seven hundred fifty-one".