1242436646 has 8 divisors (see below), whose sum is σ = 2033078184. Its totient is φ = 564743920.

The previous prime is 1242436621. The next prime is 1242436669. The reversal of 1242436646 is 6466342421.

It is a sphenic number, since it is the product of 3 distinct 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 in 3 ways as a sum of consecutive naturals, for example, 28237175 + ... + 28237218.

It is an arithmetic number, because the mean of its divisors is an integer number (254134773).

Almost surely, 2^1242436646 is an apocalyptic number.

1242436646 is a deficient number, since it is larger than the sum of its proper divisors (790641538).

1242436646 is a wasteful number, since it uses less digits than its factorization.

1242436646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56474406.

The product of its digits is 165888, while the sum is 38.

The square root of 1242436646 is about 35248.2147916742. The cubic root of 1242436646 is about 1075.0403146230.

The spelling of 1242436646 in words is "one billion, two hundred forty-two million, four hundred thirty-six thousand, six hundred forty-six".