1260491 has 8 divisors (see below), whose sum is σ = 1321344. Its totient is φ = 1200960.

The previous prime is 1260487. The next prime is 1260509. The reversal of 1260491 is 1940621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1260491 - 2² = 1260487 is a prime.

It is a super-2 number, since 2×1260491² = 3177675122162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1260401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1985 + ... + 2541.

It is an arithmetic number, because the mean of its divisors is an integer number (165168).

2^1260491 is an apocalyptic number.

1260491 is a deficient number, since it is larger than the sum of its proper divisors (60853).

1260491 is an equidigital number, since it uses as much as digits as its factorization.

1260491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1260491 is about 1122.7159035125. The cubic root of 1260491 is about 108.0222576440.

The spelling of 1260491 in words is "one million, two hundred sixty thousand, four hundred ninety-one".