125442401 has 6 divisors (see below), whose sum is σ = 145922850. Its totient is φ = 107522016.

The previous prime is 125442379. The next prime is 125442403. The reversal of 125442401 is 104244521.

It can be written as a sum of positive squares in only one way, i.e., 125440000 + 2401 = 11200^2 + 49^2 .

It is a de Polignac number, because none of the positive numbers 2^k-125442401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125442403) 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, 1279976 + ... + 1280073.

It is an arithmetic number, because the mean of its divisors is an integer number (24320475).

Almost surely, 2^125442401 is an apocalyptic number.

It is an amenable number.

125442401 is a deficient number, since it is larger than the sum of its proper divisors (20480449).

125442401 is an equidigital number, since it uses as much as digits as its factorization.

125442401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2560063 (or 2560056 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 125442401 is about 11200.1071869871. The cubic root of 125442401 is about 500.5891734765.

Adding to 125442401 its reverse (104244521), we get a palindrome (229686922).

It can be divided in two parts, 12544 and 2401, that multiplied together give a square (30118144 = 5488²).

The spelling of 125442401 in words is "one hundred twenty-five million, four hundred forty-two thousand, four hundred one".