1243412087 has 2 divisors, whose sum is σ = 1243412088. Its totient is φ = 1243412086.

The previous prime is 1243412059. The next prime is 1243412099. The reversal of 1243412087 is 7802143421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1243412087 - 2⁸ = 1243411831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1243412017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621706043 + 621706044.

It is an arithmetic number, because the mean of its divisors is an integer number (621706044).

Almost surely, 2^1243412087 is an apocalyptic number.

1243412087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243412087 is an equidigital number, since it uses as much as digits as its factorization.

1243412087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 1243412087 is about 35262.0488202260. The cubic root of 1243412087 is about 1075.3215802292.

The spelling of 1243412087 in words is "one billion, two hundred forty-three million, four hundred twelve thousand, eighty-seven".