125438101 has 4 divisors (see below), whose sum is σ = 125461152. Its totient is φ = 125415052.

The previous prime is 125438099. The next prime is 125438141. The reversal of 125438101 is 101834521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101834521 = 587 ⋅173483.

It is a cyclic number.

It is not a de Polignac number, because 125438101 - 2¹ = 125438099 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125438141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1686 + ... + 15928.

It is an arithmetic number, because the mean of its divisors is an integer number (31365288).

It is a 5442-hyperperfect number.

Almost surely, 2^125438101 is an apocalyptic number.

It is an amenable number.

125438101 is a deficient number, since it is larger than the sum of its proper divisors (23051).

125438101 is an equidigital number, since it uses as much as digits as its factorization.

125438101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23050.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 125438101 is about 11199.9152228934. The cubic root of 125438101 is about 500.5834535657.

The spelling of 125438101 in words is "one hundred twenty-five million, four hundred thirty-eight thousand, one hundred one".