1122749 has 2 divisors, whose sum is σ = 1122750. Its totient is φ = 1122748.

The previous prime is 1122739. The next prime is 1122757. The reversal of 1122749 is 9472211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 611524 + 511225 = 782^2 + 715^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122749 - 2¹² = 1118653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561374 + 561375.

It is an arithmetic number, because the mean of its divisors is an integer number (561375).

2^1122749 is an apocalyptic number.

It is an amenable number.

1122749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122749 is an equidigital number, since it uses as much as digits as its factorization.

1122749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 26.

The square root of 1122749 is about 1059.5985088702. The cubic root of 1122749 is about 103.9347778924.

The spelling of 1122749 in words is "one million, one hundred twenty-two thousand, seven hundred forty-nine".