2139424 has 24 divisors (see below), whose sum is σ = 4814208. Its totient is φ = 916800.

The previous prime is 2139409. The next prime is 2139427. The reversal of 2139424 is 4249312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139427) 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, 4552 + ... + 4999.

It is an arithmetic number, because the mean of its divisors is an integer number (200592).

2^2139424 is an apocalyptic number.

It is an amenable number.

2139424 is an abundant number, since it is smaller than the sum of its proper divisors (2674784).

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

2139424 is an equidigital number, since it uses as much as digits as its factorization.

2139424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9568 (or 9560 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 2139424 is about 1462.6769978365. The cubic root of 2139424 is about 128.8543114187.

The spelling of 2139424 in words is "two million, one hundred thirty-nine thousand, four hundred twenty-four".