1212042323240 has 64 divisors (see below), whose sum is σ = 3175485586560. Its totient is φ = 407716657920.

The previous prime is 1212042323213. The next prime is 1212042323257. The reversal of 1212042323240 is 423232402121.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 40822166 + ... + 40851845.

It is an arithmetic number, because the mean of its divisors is an integer number (49616962290).

Almost surely, 2^{1212042323240} is an apocalyptic number.

1212042323240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212042323240 is an abundant number, since it is smaller than the sum of its proper divisors (1963443263320).

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

1212042323240 is a wasteful number, since it uses less digits than its factorization.

1212042323240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81674082 (or 81674078 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 1212042323240 its reverse (423232402121), we get a palindrome (1635274725361).

The spelling of 1212042323240 in words is "one trillion, two hundred twelve billion, forty-two million, three hundred twenty-three thousand, two hundred forty".