2421881 has 16 divisors (see below), whose sum is σ = 3068928. Its totient is φ = 1856400.

The previous prime is 2421847. The next prime is 2421893. The reversal of 2421881 is 1881242.

It is not a de Polignac number, because 2421881 - 2⁶ = 2421817 is a prime.

It is a super-2 number, since 2×2421881² = 11731015156322, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 5.

It is a self number, because there is not a number n which added to its sum of digits gives 2421881.

It is not an unprimeable number, because it can be changed into a prime (2421821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5246 + ... + 5688.

It is an arithmetic number, because the mean of its divisors is an integer number (191808).

2^2421881 is an apocalyptic number.

It is an amenable number.

2421881 is a deficient number, since it is larger than the sum of its proper divisors (647047).

2421881 is a wasteful number, since it uses less digits than its factorization.

2421881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532.

The product of its digits is 1024, while the sum is 26.

The square root of 2421881 is about 1556.2393774738. The cubic root of 2421881 is about 134.2922447728.

The spelling of 2421881 in words is "two million, four hundred twenty-one thousand, eight hundred eighty-one".