2112641 has 8 divisors (see below), whose sum is σ = 2254464. Its totient is φ = 1972800.

The previous prime is 2112631. The next prime is 2112683. The reversal of 2112641 is 1462112.

2112641 = T₈₆ + T₈₇ + ... + T₂₃₆.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2112641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an Ulam number.

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 (2112601) 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 in 7 ways as a sum of consecutive naturals, for example, 2156 + ... + 2978.

It is an arithmetic number, because the mean of its divisors is an integer number (281808).

2^2112641 is an apocalyptic number.

It is an amenable number.

2112641 is a deficient number, since it is larger than the sum of its proper divisors (141823).

2112641 is a wasteful number, since it uses less digits than its factorization.

2112641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991.

The product of its digits is 96, while the sum is 17.

The square root of 2112641 is about 1453.4926900401. The cubic root of 2112641 is about 128.3143518711.

Adding to 2112641 its reverse (1462112), we get a palindrome (3574753).

The spelling of 2112641 in words is "two million, one hundred twelve thousand, six hundred forty-one".