1242889466 has 16 divisors (see below), whose sum is σ = 2294565504. Its totient is φ = 491692464.

The previous prime is 1242889451. The next prime is 1242889469. The reversal of 1242889466 is 6649882421.

It is not an unprimeable number, because it can be changed into a prime (1242889469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3414350 + ... + 3414713.

It is an arithmetic number, because the mean of its divisors is an integer number (143410344).

Almost surely, 2^1242889466 is an apocalyptic number.

1242889466 is a deficient number, since it is larger than the sum of its proper divisors (1051676038).

1242889466 is a wasteful number, since it uses less digits than its factorization.

1242889466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6829085.

The product of its digits is 1327104, while the sum is 50.

The square root of 1242889466 is about 35254.6375105460. The cubic root of 1242889466 is about 1075.1709022681.

The spelling of 1242889466 in words is "one billion, two hundred forty-two million, eight hundred eighty-nine thousand, four hundred sixty-six".