2124639 has 18 divisors (see below), whose sum is σ = 3375008. Its totient is φ = 1287000.

The previous prime is 2124631. The next prime is 2124659. The reversal of 2124639 is 9364212.

2124639 is a `hidden beast` number, since 2 + 1 + 24 + 639 = 666.

It is not a de Polignac number, because 2124639 - 2³ = 2124631 is a prime.

It is a d-powerful number, because it can be written as 2 + 1 + 2²¹ + 4² + 6⁵ + 3⁹ + 9 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2124631) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 114 + ... + 2064.

2^2124639 is an apocalyptic number.

2124639 is a deficient number, since it is larger than the sum of its proper divisors (1250369).

2124639 is a wasteful number, since it uses less digits than its factorization.

2124639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979 (or 1965 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 2124639 is about 1457.6141464736. The cubic root of 2124639 is about 128.5567988645.

It can be divided in two parts, 212 and 4639, that added together give a triangular number (4851 = T₉₈).

The spelling of 2124639 in words is "two million, one hundred twenty-four thousand, six hundred thirty-nine".