125424403 has 4 divisors (see below), whose sum is σ = 135072448. Its totient is φ = 115776360.

The previous prime is 125424389. The next prime is 125424443. The reversal of 125424403 is 304424521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304424521 = 2549 ⋅119429.

It is a cyclic number.

It is not a de Polignac number, because 125424403 - 2⁹ = 125423891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125424443) 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, 4824003 + ... + 4824028.

It is an arithmetic number, because the mean of its divisors is an integer number (33768112).

Almost surely, 2^125424403 is an apocalyptic number.

125424403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

125424403 is a deficient number, since it is larger than the sum of its proper divisors (9648045).

125424403 is an equidigital number, since it uses as much as digits as its factorization.

125424403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9648044.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 125424403 is about 11199.3036837118. The cubic root of 125424403 is about 500.5652314527.

Adding to 125424403 its reverse (304424521), we get a palindrome (429848924).

The spelling of 125424403 in words is "one hundred twenty-five million, four hundred twenty-four thousand, four hundred three".