2140434 has 12 divisors (see below), whose sum is σ = 4637646. Its totient is φ = 713472.

The previous prime is 2140421. The next prime is 2140441. The reversal of 2140434 is 4340412.

It can be written as a sum of positive squares in only one way, i.e., 2117025 + 23409 = 1455^2 + 153^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 118913 = 2140434 / (2 + 1 + 4 + 0 + 4 + 3 + 4).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 59439 + ... + 59474.

2^2140434 is an apocalyptic number.

2140434 is an abundant number, since it is smaller than the sum of its proper divisors (2497212).

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

2140434 is a wasteful number, since it uses less digits than its factorization.

2140434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118921 (or 118918 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2140434 is about 1463.0222144588. The cubic root of 2140434 is about 128.8745851590.

Adding to 2140434 its reverse (4340412), we get a palindrome (6480846).

The spelling of 2140434 in words is "two million, one hundred forty thousand, four hundred thirty-four".