1290842 has 8 divisors (see below), whose sum is σ = 2212896. Its totient is φ = 553212.

The previous prime is 1290823. The next prime is 1290847. The reversal of 1290842 is 2480921.

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

It is not an unprimeable number, because it can be changed into a prime (1290847) 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 3 ways as a sum of consecutive naturals, for example, 46088 + ... + 46115.

It is an arithmetic number, because the mean of its divisors is an integer number (276612).

2^1290842 is an apocalyptic number.

1290842 is a deficient number, since it is larger than the sum of its proper divisors (922054).

1290842 is an equidigital number, since it uses as much as digits as its factorization.

1290842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92212.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1290842 is about 1136.1522785261. The cubic root of 1290842 is about 108.8824027019.

The spelling of 1290842 in words is "one million, two hundred ninety thousand, eight hundred forty-two".