2117144 has 8 divisors (see below), whose sum is σ = 3969660. Its totient is φ = 1058568.

The previous prime is 2117131. The next prime is 2117147. The reversal of 2117144 is 4417112.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2117147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132314 + ... + 132329.

2^2117144 is an apocalyptic number.

It is an amenable number.

2117144 is a deficient number, since it is larger than the sum of its proper divisors (1852516).

2117144 is a wasteful number, since it uses less digits than its factorization.

2117144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264649 (or 264645 counting only the distinct ones).

The product of its digits is 224, while the sum is 20.

The square root of 2117144 is about 1455.0408928961. The cubic root of 2117144 is about 128.4054526141.

Subtracting 2117144 from its reverse (4417112), we obtain a cube (2299968 = 132³).

The spelling of 2117144 in words is "two million, one hundred seventeen thousand, one hundred forty-four".