1299340 has 24 divisors (see below), whose sum is σ = 3118752. Its totient is φ = 445440.

The previous prime is 1299323. The next prime is 1299341. The reversal of 1299340 is 439921.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 1299299 and 1299308.

It is not an unprimeable number, because it can be changed into a prime (1299341) by changing a digit.

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, 4501 + ... + 4780.

It is an arithmetic number, because the mean of its divisors is an integer number (129948).

2^1299340 is an apocalyptic number.

1299340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1299340 is an abundant number, since it is smaller than the sum of its proper divisors (1819412).

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

1299340 is a wasteful number, since it uses less digits than its factorization.

1299340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9297 (or 9295 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 1299340 is about 1139.8859592082. The cubic root of 1299340 is about 109.1208154539.

The spelling of 1299340 in words is "one million, two hundred ninety-nine thousand, three hundred forty".