2742397 has 8 divisors (see below), whose sum is σ = 3162816. Its totient is φ = 2329152.

The previous prime is 2742371. The next prime is 2742407. The reversal of 2742397 is 7932472.

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

It is a de Polignac number, because none of the positive numbers 2^k-2742397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2742317) 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 7 ways as a sum of consecutive naturals, for example, 943 + ... + 2524.

It is an arithmetic number, because the mean of its divisors is an integer number (395352).

2^2742397 is an apocalyptic number.

It is an amenable number.

2742397 is a deficient number, since it is larger than the sum of its proper divisors (420419).

2742397 is a wasteful number, since it uses less digits than its factorization.

2742397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3587.

The product of its digits is 21168, while the sum is 34.

The square root of 2742397 is about 1656.0184177720. The cubic root of 2742397 is about 139.9727327849.

It can be divided in two parts, 27 and 42397, that added together give a palindrome (42424).

The spelling of 2742397 in words is "two million, seven hundred forty-two thousand, three hundred ninety-seven".