1291030 has 16 divisors (see below), whose sum is σ = 2502864. Its totient is φ = 476640.

The previous prime is 1291021. The next prime is 1291063. The reversal of 1291030 is 301921.

It is a junction number, because it is equal to n+sod(n) for n = 1290995 and 1291013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4836 + ... + 5095.

It is an arithmetic number, because the mean of its divisors is an integer number (156429).

2^1291030 is an apocalyptic number.

1291030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1291030 is a deficient number, since it is larger than the sum of its proper divisors (1211834).

1291030 is a wasteful number, since it uses less digits than its factorization.

1291030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9951.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1291030 is about 1136.2350109022. The cubic root of 1291030 is about 108.8876883728.

Adding to 1291030 its reverse (301921), we get a palindrome (1592951).

It can be divided in two parts, 129 and 1030, that multiplied together give a triangular number (132870 = T₅₁₅).

The spelling of 1291030 in words is "one million, two hundred ninety-one thousand, thirty".