1214264240 has 40 divisors (see below), whose sum is σ = 3226475040. Its totient is φ = 416318976.

The previous prime is 1214264237. The next prime is 1214264257. The reversal of 1214264240 is 424624121.

It is a tau number, because it is divible by the number of its divisors (40).

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, 1083605 + ... + 1084724.

It is an arithmetic number, because the mean of its divisors is an integer number (80661876).

Almost surely, 2^1214264240 is an apocalyptic number.

1214264240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1214264240 is an abundant number, since it is smaller than the sum of its proper divisors (2012210800).

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

1214264240 is a wasteful number, since it uses less digits than its factorization.

1214264240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168349 (or 2168343 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 1214264240 is about 34846.2944945370. The cubic root of 1214264240 is about 1066.8525552768.

Adding to 1214264240 its reverse (424624121), we get a palindrome (1638888361).

The spelling of 1214264240 in words is "one billion, two hundred fourteen million, two hundred sixty-four thousand, two hundred forty".