2442397 has 4 divisors (see below), whose sum is σ = 2521216. Its totient is φ = 2363580.

The previous prime is 2442389. The next prime is 2442403. The reversal of 2442397 is 7932442.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2442397 - 2³ = 2442389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 78787 = 2442397 / (2 + 4 + 4 + 2 + 3 + 9 + 7).

It is a d-powerful number, because it can be written as 2 + 4⁸ + 4⁹ + 2²¹ + 3³ + 9³ + 7⁵ .

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2442367) 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, 39363 + ... + 39424.

It is an arithmetic number, because the mean of its divisors is an integer number (630304).

2^2442397 is an apocalyptic number.

It is an amenable number.

2442397 is a deficient number, since it is larger than the sum of its proper divisors (78819).

2442397 is an equidigital number, since it uses as much as digits as its factorization.

2442397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78818.

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

The square root of 2442397 is about 1562.8170078419. The cubic root of 2442397 is about 134.6703801163.

2442397 divided by its sum of digits (31) gives a palindrome (78787).

The spelling of 2442397 in words is "two million, four hundred forty-two thousand, three hundred ninety-seven".