1290747 has 8 divisors (see below), whose sum is σ = 1776640. Its totient is φ = 832680.

The previous prime is 1290719. The next prime is 1290791. The reversal of 1290747 is 7470921.

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

It is not a de Polignac number, because 1290747 - 2⁶ = 1290683 is a prime.

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

It is a Duffinian number.

1290747 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1290847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6847 + ... + 7032.

It is an arithmetic number, because the mean of its divisors is an integer number (222080).

2^1290747 is an apocalyptic number.

1290747 is a deficient number, since it is larger than the sum of its proper divisors (485893).

1290747 is a wasteful number, since it uses less digits than its factorization.

1290747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13913.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 1290747 is about 1136.1104699808. The cubic root of 1290747 is about 108.8797315559.

The spelling of 1290747 in words is "one million, two hundred ninety thousand, seven hundred forty-seven".