2542397 has 16 divisors (see below), whose sum is σ = 3120768. Its totient is φ = 2038080.

The previous prime is 2542391. The next prime is 2542399. The reversal of 2542397 is 7932452.

It is a happy number.

It is not a de Polignac number, because 2542397 - 2¹² = 2538301 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 (2542391) 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 15 ways as a sum of consecutive naturals, for example, 2903 + ... + 3675.

It is an arithmetic number, because the mean of its divisors is an integer number (195048).

2^2542397 is an apocalyptic number.

It is an amenable number.

2542397 is a deficient number, since it is larger than the sum of its proper divisors (578371).

2542397 is a wasteful number, since it uses less digits than its factorization.

2542397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820.

The product of its digits is 15120, while the sum is 32.

The square root of 2542397 is about 1594.4895734999. The cubic root of 2542397 is about 136.4838052768.

The spelling of 2542397 in words is "two million, five hundred forty-two thousand, three hundred ninety-seven".