2242729 has 2 divisors, whose sum is σ = 2242730. Its totient is φ = 2242728.

The previous prime is 2242727. The next prime is 2242733. The reversal of 2242729 is 9272422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1849600 + 393129 = 1360^2 + 627^2 .

It is a cyclic number.

It is not a de Polignac number, because 2242729 - 2¹ = 2242727 is a prime.

Together with 2242727, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2242697 and 2242706.

It is not a weakly prime, because it can be changed into another prime (2242727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1121364 + 1121365.

It is an arithmetic number, because the mean of its divisors is an integer number (1121365).

2^2242729 is an apocalyptic number.

It is an amenable number.

2242729 is a deficient number, since it is larger than the sum of its proper divisors (1).

2242729 is an equidigital number, since it uses as much as digits as its factorization.

2242729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 28.

The square root of 2242729 is about 1497.5743721098. The cubic root of 2242729 is about 130.8957662007.

The spelling of 2242729 in words is "two million, two hundred forty-two thousand, seven hundred twenty-nine".