1240042 has 8 divisors (see below), whose sum is σ = 1864800. Its totient is φ = 618444.

The previous prime is 1240039. The next prime is 1240081. The reversal of 1240042 is 2400421.

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

It is a plaindrome in base 13.

It is a nialpdrome in base 11.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1059 + ... + 1897.

It is an arithmetic number, because the mean of its divisors is an integer number (233100).

2^1240042 is an apocalyptic number.

1240042 is a deficient number, since it is larger than the sum of its proper divisors (624758).

1240042 is an equidigital number, since it uses as much as digits as its factorization.

1240042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 1240042 is about 1113.5717309630. The cubic root of 1240042 is about 107.4349200464.

Adding to 1240042 its reverse (2400421), we get a palindrome (3640463).

The spelling of 1240042 in words is "one million, two hundred forty thousand, forty-two".