2421858 has 16 divisors (see below), whose sum is σ = 4869216. Its totient is φ = 803040.

The previous prime is 2421847. The next prime is 2421893. The reversal of 2421858 is 8581242.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310 + ... + 2222.

It is an arithmetic number, because the mean of its divisors is an integer number (304326).

2^2421858 is an apocalyptic number.

2421858 is an abundant number, since it is smaller than the sum of its proper divisors (2447358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2421858 is a wasteful number, since it uses less digits than its factorization.

2421858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2129.

The product of its digits is 5120, while the sum is 30.

The square root of 2421858 is about 1556.2319878476. The cubic root of 2421858 is about 134.2918196582.

The spelling of 2421858 in words is "two million, four hundred twenty-one thousand, eight hundred fifty-eight".