1230642587 has 2 divisors, whose sum is σ = 1230642588. Its totient is φ = 1230642586.

The previous prime is 1230642547. The next prime is 1230642613. The reversal of 1230642587 is 7852460321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1230642587 - 2¹⁰ = 1230641563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1230642587.

It is not a weakly prime, because it can be changed into another prime (1230642547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615321293 + 615321294.

It is an arithmetic number, because the mean of its divisors is an integer number (615321294).

Almost surely, 2^1230642587 is an apocalyptic number.

1230642587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230642587 is an equidigital number, since it uses as much as digits as its factorization.

1230642587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 1230642587 is about 35080.5157744295. The cubic root of 1230642587 is about 1071.6278210105.

The spelling of 1230642587 in words is "one billion, two hundred thirty million, six hundred forty-two thousand, five hundred eighty-seven".