2742242 has 4 divisors (see below), whose sum is σ = 4113366. Its totient is φ = 1371120.

The previous prime is 2742241. The next prime is 2742247. The reversal of 2742242 is 2422472.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 2493241 + 249001 = 1579^2 + 499^2 .

It is not an unprimeable number, because it can be changed into a prime (2742241) 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 as a sum of consecutive naturals, namely, 685559 + ... + 685562.

2^2742242 is an apocalyptic number.

2742242 is a deficient number, since it is larger than the sum of its proper divisors (1371124).

2742242 is a wasteful number, since it uses less digits than its factorization.

2742242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371123.

The product of its digits is 1792, while the sum is 23.

The square root of 2742242 is about 1655.9716181143. The cubic root of 2742242 is about 139.9700956536.

The spelling of 2742242 in words is "two million, seven hundred forty-two thousand, two hundred forty-two".