1234255999 has 2 divisors, whose sum is σ = 1234256000. Its totient is φ = 1234255998.

The previous prime is 1234255991. The next prime is 1234256011. The reversal of 1234255999 is 9995524321.

It is a weak prime.

It is an emirp because it is prime and its reverse (9995524321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1234255999 - 2³ = 1234255991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1234255991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617127999 + 617128000.

It is an arithmetic number, because the mean of its divisors is an integer number (617128000).

Almost surely, 2^1234255999 is an apocalyptic number.

1234255999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234255999 is an equidigital number, since it uses as much as digits as its factorization.

1234255999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 874800, while the sum is 49.

The square root of 1234255999 is about 35131.9797193383. The cubic root of 1234255999 is about 1072.6756337971.

The spelling of 1234255999 in words is "one billion, two hundred thirty-four million, two hundred fifty-five thousand, nine hundred ninety-nine".