1299136 has 28 divisors (see below), whose sum is σ = 2633472. Its totient is φ = 635648.

The previous prime is 1299101. The next prime is 1299143. The reversal of 1299136 is 6319921.

It is a junction number, because it is equal to n+sod(n) for n = 1299098 and 1299107.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3201 + ... + 3583.

2^1299136 is an apocalyptic number.

1299136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1299136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1316736).

1299136 is an abundant number, since it is smaller than the sum of its proper divisors (1334336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1299136 is an equidigital number, since it uses as much as digits as its factorization.

1299136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 438 counting only the distinct ones).

The product of its digits is 2916, while the sum is 31.

The square root of 1299136 is about 1139.7964730600. The cubic root of 1299136 is about 109.1151043976.

The spelling of 1299136 in words is "one million, two hundred ninety-nine thousand, one hundred thirty-six".