1261229 has 4 divisors (see below), whose sum is σ = 1266876. Its totient is φ = 1255584.

The previous prime is 1261223. The next prime is 1261259. The reversal of 1261229 is 9221621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9221621 = 37 ⋅249233.

It can be written as a sum of positive squares in 2 ways, for example, as 265225 + 996004 = 515^2 + 998^2 .

It is a cyclic number.

It is not a de Polignac number, because 1261229 - 2¹⁶ = 1195693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2474 + ... + 2939.

It is an arithmetic number, because the mean of its divisors is an integer number (316719).

2^1261229 is an apocalyptic number.

It is an amenable number.

1261229 is a deficient number, since it is larger than the sum of its proper divisors (5647).

1261229 is an equidigital number, since it uses as much as digits as its factorization.

1261229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5646.

The product of its digits is 432, while the sum is 23.

The square root of 1261229 is about 1123.0445227149. The cubic root of 1261229 is about 108.0433353756.

The spelling of 1261229 in words is "one million, two hundred sixty-one thousand, two hundred twenty-nine".