3440642 has 4 divisors (see below), whose sum is σ = 5160966. Its totient is φ = 1720320.

The previous prime is 3440627. The next prime is 3440663. The reversal of 3440642 is 2460443.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2460443 = 19 ⋅129497.

It can be written as a sum of positive squares in only one way, i.e., 1825201 + 1615441 = 1351^2 + 1271^2 .

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 as a sum of consecutive naturals, namely, 860159 + ... + 860162.

Almost surely, 2^3440642 is an apocalyptic number.

3440642 is a deficient number, since it is larger than the sum of its proper divisors (1720324).

3440642 is a wasteful number, since it uses less digits than its factorization.

3440642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1720323.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 3440642 is about 1854.8967626259. The cubic root of 3440642 is about 150.9662366217.

The spelling of 3440642 in words is "three million, four hundred forty thousand, six hundred forty-two".