1042749 has 6 divisors (see below), whose sum is σ = 1506206. Its totient is φ = 695160.

The previous prime is 1042733. The next prime is 1042759. The reversal of 1042749 is 9472401.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 562500 + 480249 = 750^2 + 693^2 .

It is not a de Polignac number, because 1042749 - 2⁴ = 1042733 is a prime.

It is a Duffinian number.

1042749 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042709) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57922 + ... + 57939.

2^1042749 is an apocalyptic number.

It is an amenable number.

1042749 is a deficient number, since it is larger than the sum of its proper divisors (463457).

1042749 is a wasteful number, since it uses less digits than its factorization.

1042749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115867 (or 115864 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1042749 is about 1021.1508213775. The cubic root of 1042749 is about 101.4051302797.

The spelling of 1042749 in words is "one million, forty-two thousand, seven hundred forty-nine".