2102456 has 8 divisors (see below), whose sum is σ = 3942120. Its totient is φ = 1051224.

The previous prime is 2102431. The next prime is 2102459. The reversal of 2102456 is 6542012.

It is a happy number.

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 (2102459) 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, 131396 + ... + 131411.

It is an arithmetic number, because the mean of its divisors is an integer number (492765).

2^2102456 is an apocalyptic number.

It is an amenable number.

2102456 is a deficient number, since it is larger than the sum of its proper divisors (1839664).

2102456 is a wasteful number, since it uses less digits than its factorization.

2102456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262813 (or 262809 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2102456 is about 1449.9848275068. The cubic root of 2102456 is about 128.1078193104.

Adding to 2102456 its reverse (6542012), we get a palindrome (8644468).

The spelling of 2102456 in words is "two million, one hundred two thousand, four hundred fifty-six".