4123987 has 6 divisors (see below), whose sum is σ = 4797348. Its totient is φ = 3534804.

The previous prime is 4123967. The next prime is 4123997. The reversal of 4123987 is 7893214.

It is a de Polignac number, because none of the positive numbers 2^k-4123987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4123907) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42033 + ... + 42130.

It is an arithmetic number, because the mean of its divisors is an integer number (799558).

Almost surely, 2^4123987 is an apocalyptic number.

4123987 is a deficient number, since it is larger than the sum of its proper divisors (673361).

4123987 is an equidigital number, since it uses as much as digits as its factorization.

4123987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84177 (or 84170 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 4123987 is about 2030.7602024858. The cubic root of 4123987 is about 160.3635872138.

The spelling of 4123987 in words is "four million, one hundred twenty-three thousand, nine hundred eighty-seven".