1242030816 has 72 divisors (see below), whose sum is σ = 3803730840. Its totient is φ = 382162176.

The previous prime is 1242030793. The next prime is 1242030827. The reversal of 1242030816 is 6180302421.

It is a tau number, because it is divible by the number of its divisors (72).

It is a self number, because there is not a number n which added to its sum of digits gives 1242030816.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 162126 + ... + 169613.

It is an arithmetic number, because the mean of its divisors is an integer number (52829595).

Almost surely, 2^1242030816 is an apocalyptic number.

1242030816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1242030816 is an abundant number, since it is smaller than the sum of its proper divisors (2561700024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1242030816 is a wasteful number, since it uses less digits than its factorization.

1242030816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331768 (or 331757 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1242030816 is about 35242.4575760545. The cubic root of 1242030816 is about 1074.9232513442.

The spelling of 1242030816 in words is "one billion, two hundred forty-two million, thirty thousand, eight hundred sixteen".