1299320 has 32 divisors (see below), whose sum is σ = 3190320. Its totient is φ = 472320.

The previous prime is 1299317. The next prime is 1299323. The reversal of 1299320 is 239921.

It is an interprime number because it is at equal distance from previous prime (1299317) and next prime (1299323).

It is a self number, because there is not a number n which added to its sum of digits gives 1299320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1299323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1037 + ... + 1916.

2^1299320 is an apocalyptic number.

1299320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1299320 is an abundant number, since it is smaller than the sum of its proper divisors (1891000).

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

1299320 is a wasteful number, since it uses less digits than its factorization.

1299320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2975 (or 2971 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 1299320 is about 1139.8771863670. The cubic root of 1299320 is about 109.1202555728.

It can be divided in two parts, 129 and 9320, that added together give a palindrome (9449).

The spelling of 1299320 in words is "one million, two hundred ninety-nine thousand, three hundred twenty".