1240878966 has 36 divisors (see below), whose sum is σ = 2529057852. Its totient is φ = 405889344.

The previous prime is 1240878937. The next prime is 1240878979. The reversal of 1240878966 is 6698780421.

It is a super-2 number, since 2×1240878966² = 3079561216522458312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6298780 + ... + 6298976.

It is an arithmetic number, because the mean of its divisors is an integer number (70251607).

Almost surely, 2^1240878966 is an apocalyptic number.

1240878966 is an abundant number, since it is smaller than the sum of its proper divisors (1288178886).

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

1240878966 is an frugal number, since it uses more digits than its factorization.

1240878966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545 (or 275 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 1240878966 is about 35226.1119909649. Note that the first 3 decimals coincide. The cubic root of 1240878966 is about 1074.5908566675.

The spelling of 1240878966 in words is "one billion, two hundred forty million, eight hundred seventy-eight thousand, nine hundred sixty-six".