1212140413 has 4 divisors (see below), whose sum is σ = 1322335008. Its totient is φ = 1101945820.

The previous prime is 1212140407. The next prime is 1212140497. The reversal of 1212140413 is 3140412121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1212140413 - 2⁵ = 1212140381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210140413) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 55097281 + ... + 55097302.

It is an arithmetic number, because the mean of its divisors is an integer number (330583752).

Almost surely, 2^1212140413 is an apocalyptic number.

It is an amenable number.

1212140413 is a deficient number, since it is larger than the sum of its proper divisors (110194595).

1212140413 is a wasteful number, since it uses less digits than its factorization.

1212140413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110194594.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1212140413 is about 34815.8069416752. The cubic root of 1212140413 is about 1066.2301941551.

Adding to 1212140413 its reverse (3140412121), we get a palindrome (4352552534).

The spelling of 1212140413 in words is "one billion, two hundred twelve million, one hundred forty thousand, four hundred thirteen".