2421139 has 6 divisors (see below), whose sum is σ = 2816484. Its totient is φ = 2075220.

The previous prime is 2421137. The next prime is 2421149. The reversal of 2421139 is 9311242.

2421139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2421139 - 2¹ = 2421137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2421137) 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 5 ways as a sum of consecutive naturals, for example, 24657 + ... + 24754.

It is an arithmetic number, because the mean of its divisors is an integer number (469414).

2^2421139 is an apocalyptic number.

2421139 is a deficient number, since it is larger than the sum of its proper divisors (395345).

2421139 is an equidigital number, since it uses as much as digits as its factorization.

2421139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49425 (or 49418 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

The square root of 2421139 is about 1556.0009640100. Note that the first 3 decimals coincide. The cubic root of 2421139 is about 134.2785288466.

The spelling of 2421139 in words is "two million, four hundred twenty-one thousand, one hundred thirty-nine".