125998107 has 4 divisors (see below), whose sum is σ = 167997480. Its totient is φ = 83998736.

The previous prime is 125998087. The next prime is 125998121. The reversal of 125998107 is 701899521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125998107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125998007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20999682 + ... + 20999687.

It is an arithmetic number, because the mean of its divisors is an integer number (41999370).

Almost surely, 2^125998107 is an apocalyptic number.

125998107 is a deficient number, since it is larger than the sum of its proper divisors (41999373).

125998107 is an equidigital number, since it uses as much as digits as its factorization.

125998107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41999372.

The product of its (nonzero) digits is 45360, while the sum is 42.

The square root of 125998107 is about 11224.8878390833. The cubic root of 125998107 is about 501.3272828561.

It can be divided in two parts, 12599 and 8107, that added together give a triangular number (20706 = T₂₀₃).

The spelling of 125998107 in words is "one hundred twenty-five million, nine hundred ninety-eight thousand, one hundred seven".