1282742 has 4 divisors (see below), whose sum is σ = 1924116. Its totient is φ = 641370.

The previous prime is 1282739. The next prime is 1282751. The reversal of 1282742 is 2472821.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 320684 + ... + 320687.

It is an arithmetic number, because the mean of its divisors is an integer number (481029).

2^1282742 is an apocalyptic number.

1282742 is a deficient number, since it is larger than the sum of its proper divisors (641374).

1282742 is an equidigital number, since it uses as much as digits as its factorization.

1282742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641373.

The product of its digits is 1792, while the sum is 26.

The square root of 1282742 is about 1132.5820058609. The cubic root of 1282742 is about 108.6541799211.

The spelling of 1282742 in words is "one million, two hundred eighty-two thousand, seven hundred forty-two".