1242064776 has 32 divisors (see below), whose sum is σ = 3140056800. Its totient is φ = 409368960.

The previous prime is 1242064739. The next prime is 1242064799. The reversal of 1242064776 is 6774602421.

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 7 ways as a sum of consecutive naturals, for example, 288610 + ... + 292881.

It is an arithmetic number, because the mean of its divisors is an integer number (98126775).

Almost surely, 2^1242064776 is an apocalyptic number.

It is an amenable number.

1242064776 is an abundant number, since it is smaller than the sum of its proper divisors (1897992024).

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

1242064776 is a wasteful number, since it uses less digits than its factorization.

1242064776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581589 (or 581585 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 1242064776 is about 35242.9393779804. The cubic root of 1242064776 is about 1074.9330482190.

The spelling of 1242064776 in words is "one billion, two hundred forty-two million, sixty-four thousand, seven hundred seventy-six".