1442749 has 16 divisors (see below), whose sum is σ = 1846656. Its totient is φ = 1094400.

The previous prime is 1442743. The next prime is 1442783. The reversal of 1442749 is 9472441.

It is a cyclic number.

It is not a de Polignac number, because 1442749 - 2⁵ = 1442717 is a prime.

It is an Ulam number.

1442749 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1442749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2929 + ... + 3385.

It is an arithmetic number, because the mean of its divisors is an integer number (115416).

2^1442749 is an apocalyptic number.

It is an amenable number.

1442749 is a deficient number, since it is larger than the sum of its proper divisors (403907).

1442749 is a wasteful number, since it uses less digits than its factorization.

1442749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516.

The product of its digits is 8064, while the sum is 31.

The square root of 1442749 is about 1201.1448705298. The cubic root of 1442749 is about 112.9961363443.

It can be divided in two parts, 144274 and 9, that multiplied together give a triangular number (1298466 = T₁₆₁₁).

The spelling of 1442749 in words is "one million, four hundred forty-two thousand, seven hundred forty-nine".