2122749 has 12 divisors (see below), whose sum is σ = 3087136. Its totient is φ = 1405512.

The previous prime is 2122741. The next prime is 2122753. The reversal of 2122749 is 9472212.

It is not a de Polignac number, because 2122749 - 2³ = 2122741 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 1 + 2¹³ + 2²¹ + 7⁵ + 4 + 9² .

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 744 + ... + 2190.

2^2122749 is an apocalyptic number.

It is an amenable number.

2122749 is a deficient number, since it is larger than the sum of its proper divisors (964387).

2122749 is a wasteful number, since it uses less digits than its factorization.

2122749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616 (or 1613 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 2122749 is about 1456.9656825059. The cubic root of 2122749 is about 128.5186677699.

The spelling of 2122749 in words is "two million, one hundred twenty-two thousand, seven hundred forty-nine".