4125917987 has 4 divisors (see below), whose sum is σ = 4148713296. Its totient is φ = 4103122680.

The previous prime is 4125917941. The next prime is 4125917993. The reversal of 4125917987 is 7897195214.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7897195214 = 2 ⋅3948597607.

It is a cyclic number.

It is not a de Polignac number, because 4125917987 - 2⁶ = 4125917923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4125907987) 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 in 3 ways as a sum of consecutive naturals, for example, 11397383 + ... + 11397744.

It is an arithmetic number, because the mean of its divisors is an integer number (1037178324).

Almost surely, 2^4125917987 is an apocalyptic number.

4125917987 is a deficient number, since it is larger than the sum of its proper divisors (22795309).

4125917987 is a wasteful number, since it uses less digits than its factorization.

4125917987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22795308.

The product of its digits is 1270080, while the sum is 53.

The square root of 4125917987 is about 64233.3090148717. The cubic root of 4125917987 is about 1603.8861248533.

The spelling of 4125917987 in words is "four billion, one hundred twenty-five million, nine hundred seventeen thousand, nine hundred eighty-seven".