1260729 has 12 divisors (see below), whose sum is σ = 1837056. Its totient is φ = 833112.

The previous prime is 1260719. The next prime is 1260731. The reversal of 1260729 is 9270621.

It is not a de Polignac number, because 1260729 - 2⁴ = 1260713 is a prime.

It is a super-2 number, since 2×1260729² = 3178875222882, which contains 22 as substring.

1260729 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1260719) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 592 + ... + 1694.

It is an arithmetic number, because the mean of its divisors is an integer number (153088).

2^1260729 is an apocalyptic number.

It is an amenable number.

1260729 is a deficient number, since it is larger than the sum of its proper divisors (576327).

1260729 is a wasteful number, since it uses less digits than its factorization.

1260729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236 (or 1233 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 1260729 is about 1122.8218914859. The cubic root of 1260729 is about 108.0290559682.

The spelling of 1260729 in words is "one million, two hundred sixty thousand, seven hundred twenty-nine".