125440401 has 8 divisors (see below), whose sum is σ = 167374944. Its totient is φ = 83566400.

The previous prime is 125440369. The next prime is 125440423. The reversal of 125440401 is 104044521.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 125440401 - 2⁵ = 125440369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125440001) 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, 10056 + ... + 18761.

It is an arithmetic number, because the mean of its divisors is an integer number (20921868).

Almost surely, 2^125440401 is an apocalyptic number.

It is an amenable number.

125440401 is a deficient number, since it is larger than the sum of its proper divisors (41934543).

125440401 is a wasteful number, since it uses less digits than its factorization.

125440401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30271.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 125440401 is about 11200.0179017714. The cubic root of 125440401 is about 500.5865130692.

Adding to 125440401 its reverse (104044521), we get a palindrome (229484922).

The spelling of 125440401 in words is "one hundred twenty-five million, four hundred forty thousand, four hundred one".