1213629242387 has 2 divisors, whose sum is σ = 1213629242388. Its totient is φ = 1213629242386.

The previous prime is 1213629242323. The next prime is 1213629242443. The reversal of 1213629242387 is 7832429263121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1213629242387 - 2⁶ = 1213629242323 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213629242317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606814621193 + 606814621194.

It is an arithmetic number, because the mean of its divisors is an integer number (606814621194).

Almost surely, 2^{1213629242387} is an apocalyptic number.

1213629242387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213629242387 is an equidigital number, since it uses as much as digits as its factorization.

1213629242387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 50.

The spelling of 1213629242387 in words is "one trillion, two hundred thirteen billion, six hundred twenty-nine million, two hundred forty-two thousand, three hundred eighty-seven".