2421406 has 8 divisors (see below), whose sum is σ = 3911544. Its totient is φ = 1117560.

The previous prime is 2421403. The next prime is 2421407. The reversal of 2421406 is 6041242.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421403) 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, 46540 + ... + 46591.

It is an arithmetic number, because the mean of its divisors is an integer number (488943).

2^2421406 is an apocalyptic number.

2421406 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2421406 is a deficient number, since it is larger than the sum of its proper divisors (1490138).

2421406 is a wasteful number, since it uses less digits than its factorization.

2421406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93146.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2421406 is about 1556.0867585067. The cubic root of 2421406 is about 134.2834646846.

Adding to 2421406 its reverse (6041242), we get a palindrome (8462648).

The spelling of 2421406 in words is "two million, four hundred twenty-one thousand, four hundred six".