2134445 has 4 divisors (see below), whose sum is σ = 2561340. Its totient is φ = 1707552.

The previous prime is 2134439. The next prime is 2134463. The reversal of 2134445 is 5444312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 276676 + 1857769 = 526^2 + 1363^2 .

It is a cyclic number.

It is not a de Polignac number, because 2134445 - 2¹⁸ = 1872301 is a prime.

It is a d-powerful number, because it can be written as 2³ + 1 + 3¹¹ + 4 + 4³ + 4⁶ + 5⁹ .

It is a self number, because there is not a number n which added to its sum of digits gives 2134445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213440 + ... + 213449.

It is an arithmetic number, because the mean of its divisors is an integer number (640335).

2^2134445 is an apocalyptic number.

It is an amenable number.

2134445 is a deficient number, since it is larger than the sum of its proper divisors (426895).

2134445 is an equidigital number, since it uses as much as digits as its factorization.

2134445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426894.

The product of its digits is 1920, while the sum is 23.

The square root of 2134445 is about 1460.9739901860. The cubic root of 2134445 is about 128.7542745305.

Adding to 2134445 its reverse (5444312), we get a palindrome (7578757).

The spelling of 2134445 in words is "two million, one hundred thirty-four thousand, four hundred forty-five".