2421397 has 8 divisors (see below), whose sum is σ = 2655072. Its totient is φ = 2190000.

The previous prime is 2421389. The next prime is 2421403. The reversal of 2421397 is 7931242.

2421397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2421397 - 2³ = 2421389 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 (2421347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2323 + ... + 3199.

It is an arithmetic number, because the mean of its divisors is an integer number (331884).

2^2421397 is an apocalyptic number.

It is an amenable number.

2421397 is a deficient number, since it is larger than the sum of its proper divisors (233675).

2421397 is a wasteful number, since it uses less digits than its factorization.

2421397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139.

The product of its digits is 3024, while the sum is 28.

The square root of 2421397 is about 1556.0838666344. The cubic root of 2421397 is about 134.2832983139.

It can be divided in two parts, 24213 and 97, that added together give a triangular number (24310 = T₂₂₀).

The spelling of 2421397 in words is "two million, four hundred twenty-one thousand, three hundred ninety-seven".