2742493 has 4 divisors (see below), whose sum is σ = 2953468. Its totient is φ = 2531520.

The previous prime is 2742473. The next prime is 2742503. The reversal of 2742493 is 3942472.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1582564 + 1159929 = 1258^2 + 1077^2 .

It is a cyclic number.

It is not a de Polignac number, because 2742493 - 2⁵ = 2742461 is a prime.

It is a super-3 number, since 3×2742493³ = 61881073330790691471, which contains 333 as substring.

It is a d-powerful number, because it can be written as 2⁹ + 7² + 4⁸ + 2¹⁵ + 4¹⁰ + 9³ + 3¹³ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2742463) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 105468 + ... + 105493.

It is an arithmetic number, because the mean of its divisors is an integer number (738367).

2^2742493 is an apocalyptic number.

It is an amenable number.

2742493 is a deficient number, since it is larger than the sum of its proper divisors (210975).

2742493 is a wasteful number, since it uses less digits than its factorization.

2742493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210974.

The product of its digits is 12096, while the sum is 31.

The square root of 2742493 is about 1656.0474027032. The cubic root of 2742493 is about 139.9743660550.

The spelling of 2742493 in words is "two million, seven hundred forty-two thousand, four hundred ninety-three".