125247439 has 2 divisors, whose sum is σ = 125247440. Its totient is φ = 125247438.

The previous prime is 125247413. The next prime is 125247481. The reversal of 125247439 is 934742521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125247439 - 2¹¹ = 125245391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125247398 and 125247407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125247539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62623719 + 62623720.

It is an arithmetic number, because the mean of its divisors is an integer number (62623720).

Almost surely, 2^125247439 is an apocalyptic number.

125247439 is a deficient number, since it is larger than the sum of its proper divisors (1).

125247439 is an equidigital number, since it uses as much as digits as its factorization.

125247439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 37.

The square root of 125247439 is about 11191.4002251729. The cubic root of 125247439 is about 500.3297012131.

The spelling of 125247439 in words is "one hundred twenty-five million, two hundred forty-seven thousand, four hundred thirty-nine".