1243246087 has 2 divisors, whose sum is σ = 1243246088. Its totient is φ = 1243246086.

The previous prime is 1243246061. The next prime is 1243246099. The reversal of 1243246087 is 7806423421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1243246087 - 2¹¹ = 1243244039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1243246027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621623043 + 621623044.

It is an arithmetic number, because the mean of its divisors is an integer number (621623044).

Almost surely, 2^1243246087 is an apocalyptic number.

1243246087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243246087 is an equidigital number, since it uses as much as digits as its factorization.

1243246087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 1243246087 is about 35259.6949362867. The cubic root of 1243246087 is about 1075.2737249959.

The spelling of 1243246087 in words is "one billion, two hundred forty-three million, two hundred forty-six thousand, eighty-seven".