2130456 has 32 divisors (see below), whose sum is σ = 5511600. Its totient is φ = 685440.

The previous prime is 2130439. The next prime is 2130461. The reversal of 2130456 is 6540312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 835 + ... + 2226.

2^2130456 is an apocalyptic number.

It is an amenable number.

2130456 is an abundant number, since it is smaller than the sum of its proper divisors (3381144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2130456 is a wasteful number, since it uses less digits than its factorization.

2130456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3099 (or 3095 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2130456 is about 1459.6081665981. The cubic root of 2130456 is about 128.6740161832.

Adding to 2130456 its reverse (6540312), we get a palindrome (8670768).

The spelling of 2130456 in words is "two million, one hundred thirty thousand, four hundred fifty-six".