1212142411 has 8 divisors (see below), whose sum is σ = 1285121600. Its totient is φ = 1140081480.

The previous prime is 1212142403. The next prime is 1212142417. The reversal of 1212142411 is 1142412121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212142411 - 2³ = 1212142403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212142417) 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, 226845 + ... + 232126.

It is an arithmetic number, because the mean of its divisors is an integer number (160640200).

Almost surely, 2^1212142411 is an apocalyptic number.

1212142411 is a deficient number, since it is larger than the sum of its proper divisors (72979189).

1212142411 is a wasteful number, since it uses less digits than its factorization.

1212142411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459129.

The product of its digits is 128, while the sum is 19.

The square root of 1212142411 is about 34815.8356355265. The cubic root of 1212142411 is about 1066.2307799857.

Adding to 1212142411 its reverse (1142412121), we get a palindrome (2354554532).

The spelling of 1212142411 in words is "one billion, two hundred twelve million, one hundred forty-two thousand, four hundred eleven".