1298727 has 16 divisors (see below), whose sum is σ = 1946880. Its totient is φ = 855576.

The previous prime is 1298723. The next prime is 1298747. The reversal of 1298727 is 7278921.

It is not a de Polignac number, because 1298727 - 2² = 1298723 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1298691 and 1298700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298723) 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 15 ways as a sum of consecutive naturals, for example, 2548 + ... + 3014.

It is an arithmetic number, because the mean of its divisors is an integer number (121680).

2^1298727 is an apocalyptic number.

1298727 is a deficient number, since it is larger than the sum of its proper divisors (648153).

1298727 is a wasteful number, since it uses less digits than its factorization.

1298727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579 (or 573 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 1298727 is about 1139.6170409396. The cubic root of 1298727 is about 109.1036524886.

It can be divided in two parts, 1298 and 727, that added together give a square (2025 = 45²).

The spelling of 1298727 in words is "one million, two hundred ninety-eight thousand, seven hundred twenty-seven".