1290029 has 4 divisors (see below), whose sum is σ = 1389276. Its totient is φ = 1190784.

The previous prime is 1290019. The next prime is 1290031. The reversal of 1290029 is 9200921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9200921 = 19 ⋅484259.

It can be written as a sum of positive squares in 2 ways, for example, as 75625 + 1214404 = 275^2 + 1102^2 .

It is a cyclic number.

It is not a de Polignac number, because 1290029 - 2⁴ = 1290013 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1289986 and 1290013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290019) 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, 49604 + ... + 49629.

It is an arithmetic number, because the mean of its divisors is an integer number (347319).

2^1290029 is an apocalyptic number.

It is an amenable number.

1290029 is a deficient number, since it is larger than the sum of its proper divisors (99247).

1290029 is an equidigital number, since it uses as much as digits as its factorization.

1290029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99246.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1290029 is about 1135.7944356264. The cubic root of 1290029 is about 108.8595390764.

The spelling of 1290029 in words is "one million, two hundred ninety thousand, twenty-nine".