1299285 has 24 divisors (see below), whose sum is σ = 2426424. Its totient is φ = 639360.

The previous prime is 1299283. The next prime is 1299289. The reversal of 1299285 is 5829921.

It can be written as a sum of positive squares in 4 ways, for example, as 60516 + 1238769 = 246^2 + 1113^2 .

It is not a de Polignac number, because 1299285 - 2¹ = 1299283 is a prime.

It is a super-2 number, since 2×1299285² = 3376283022450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1299283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 526 + ... + 1695.

It is an arithmetic number, because the mean of its divisors is an integer number (101101).

2^1299285 is an apocalyptic number.

1299285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1299285 is a deficient number, since it is larger than the sum of its proper divisors (1127139).

1299285 is a wasteful number, since it uses less digits than its factorization.

1299285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245 (or 2242 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 1299285 is about 1139.8618337325. The cubic root of 1299285 is about 109.1192757672.

The spelling of 1299285 in words is "one million, two hundred ninety-nine thousand, two hundred eighty-five".