125240001 has 8 divisors (see below), whose sum is σ = 175775520. Its totient is φ = 79098912.

The previous prime is 125239997. The next prime is 125240029. The reversal of 125240001 is 100042521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125240001 - 2² = 125239997 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (125240501) 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 7 ways as a sum of consecutive naturals, for example, 1098540 + ... + 1098653.

It is an arithmetic number, because the mean of its divisors is an integer number (21971940).

Almost surely, 2^125240001 is an apocalyptic number.

It is an amenable number.

125240001 is a deficient number, since it is larger than the sum of its proper divisors (50535519).

125240001 is a wasteful number, since it uses less digits than its factorization.

125240001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197215.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 125240001 is about 11191.0679115087. The cubic root of 125240001 is about 500.3197967498.

Adding to 125240001 its reverse (100042521), we get a palindrome (225282522).

The spelling of 125240001 in words is "one hundred twenty-five million, two hundred forty thousand, one".