123084287 has 2 divisors, whose sum is σ = 123084288. Its totient is φ = 123084286.

The previous prime is 123084277. The next prime is 123084307. The reversal of 123084287 is 782480321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123084287 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123084257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61542143 + 61542144.

It is an arithmetic number, because the mean of its divisors is an integer number (61542144).

Almost surely, 2^123084287 is an apocalyptic number.

123084287 is a deficient number, since it is larger than the sum of its proper divisors (1).

123084287 is an equidigital number, since it uses as much as digits as its factorization.

123084287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 123084287 is about 11094.3358070684. The cubic root of 123084287 is about 497.4325550179.

The spelling of 123084287 in words is "one hundred twenty-three million, eighty-four thousand, two hundred eighty-seven".