1012749 has 4 divisors (see below), whose sum is σ = 1350336. Its totient is φ = 675164.

The previous prime is 1012733. The next prime is 1012751. The reversal of 1012749 is 9472101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9472101 = 3 ⋅3157367.

It is a cyclic number.

It is not a de Polignac number, because 1012749 - 2⁴ = 1012733 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012769) 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 3 ways as a sum of consecutive naturals, for example, 168789 + ... + 168794.

It is an arithmetic number, because the mean of its divisors is an integer number (337584).

2^1012749 is an apocalyptic number.

It is an amenable number.

1012749 is a deficient number, since it is larger than the sum of its proper divisors (337587).

1012749 is an equidigital number, since it uses as much as digits as its factorization.

1012749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337586.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 1012749 is about 1006.3543113635. The cubic root of 1012749 is about 100.4231733835.

It can be divided in two parts, 101 and 2749, that added together give a triangular number (2850 = T₇₅).

The spelling of 1012749 in words is "one million, twelve thousand, seven hundred forty-nine".