1281029 has 2 divisors, whose sum is σ = 1281030. Its totient is φ = 1281028.

The previous prime is 1280989. The next prime is 1281041. The reversal of 1281029 is 9201821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 828100 + 452929 = 910^2 + 673^2 .

It is an emirp because it is prime and its reverse (9201821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1281029 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1280995 and 1281013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1281089) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 640514 + 640515.

It is an arithmetic number, because the mean of its divisors is an integer number (640515).

2^1281029 is an apocalyptic number.

It is an amenable number.

1281029 is a deficient number, since it is larger than the sum of its proper divisors (1).

1281029 is an equidigital number, since it uses as much as digits as its factorization.

1281029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1281029 is about 1131.8255165881. The cubic root of 1281029 is about 108.6057920345.

The spelling of 1281029 in words is "one million, two hundred eighty-one thousand, twenty-nine".