123342587 has 2 divisors, whose sum is σ = 123342588. Its totient is φ = 123342586.

The previous prime is 123342553. The next prime is 123342649. The reversal of 123342587 is 785243321.

It is a weak prime.

It is an emirp because it is prime and its reverse (785243321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123342587 - 2¹⁰ = 123341563 is a prime.

It is a super-4 number, since 4×123342587⁴ (a number of 33 digits) contains 4444 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123342517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61671293 + 61671294.

It is an arithmetic number, because the mean of its divisors is an integer number (61671294).

Almost surely, 2^123342587 is an apocalyptic number.

123342587 is a deficient number, since it is larger than the sum of its proper divisors (1).

123342587 is an equidigital number, since it uses as much as digits as its factorization.

123342587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 35.

The square root of 123342587 is about 11105.9707815211. The cubic root of 123342587 is about 497.7802762354.

The spelling of 123342587 in words is "one hundred twenty-three million, three hundred forty-two thousand, five hundred eighty-seven".