1290761 has 8 divisors (see below), whose sum is σ = 1365120. Its totient is φ = 1218448.

The previous prime is 1290719. The next prime is 1290791. The reversal of 1290761 is 1670921.

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 1290761 - 2¹⁸ = 1028617 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1290761.

It is not an unprimeable number, because it can be changed into a prime (1290791) 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, 890 + ... + 1836.

It is an arithmetic number, because the mean of its divisors is an integer number (170640).

2^1290761 is an apocalyptic number.

It is an amenable number.

1290761 is a deficient number, since it is larger than the sum of its proper divisors (74359).

1290761 is an equidigital number, since it uses as much as digits as its factorization.

1290761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 1290761 is about 1136.1166313368. The cubic root of 1290761 is about 108.8801252067.

The spelling of 1290761 in words is "one million, two hundred ninety thousand, seven hundred sixty-one".