1122729 has 8 divisors (see below), whose sum is σ = 1575840. Its totient is φ = 709056.

The previous prime is 1122721. The next prime is 1122739. The reversal of 1122729 is 9272211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1122729 - 2³ = 1122721 is a prime.

It is a Curzon number.

1122729 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1122699 and 1122708.

It is not an unprimeable number, because it can be changed into a prime (1122721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9792 + ... + 9905.

It is an arithmetic number, because the mean of its divisors is an integer number (196980).

2^1122729 is an apocalyptic number.

1122729 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1122729 is a deficient number, since it is larger than the sum of its proper divisors (453111).

1122729 is a wasteful number, since it uses less digits than its factorization.

1122729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19719.

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

The square root of 1122729 is about 1059.5890712913. The cubic root of 1122729 is about 103.9341607441.

The spelling of 1122729 in words is "one million, one hundred twenty-two thousand, seven hundred twenty-nine".