1240555066 has 16 divisors (see below), whose sum is σ = 1877087520. Its totient is φ = 614869840.

The previous prime is 1240555061. The next prime is 1240555103. The reversal of 1240555066 is 6605550421.

It is not an unprimeable number, because it can be changed into a prime (1240555061) 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, 309000 + ... + 312988.

It is an arithmetic number, because the mean of its divisors is an integer number (117317970).

Almost surely, 2^1240555066 is an apocalyptic number.

1240555066 is a deficient number, since it is larger than the sum of its proper divisors (636532454).

1240555066 is a wasteful number, since it uses less digits than its factorization.

1240555066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5309.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 1240555066 is about 35221.5142491063. The cubic root of 1240555066 is about 1074.4973502965.

The spelling of 1240555066 in words is "one billion, two hundred forty million, five hundred fifty-five thousand, sixty-six".