125126437 has 2 divisors, whose sum is σ = 125126438. Its totient is φ = 125126436.

The previous prime is 125126423. The next prime is 125126459. The reversal of 125126437 is 734621521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99380961 + 25745476 = 9969^2 + 5074^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125126437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125126399 and 125126408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125126467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62563218 + 62563219.

It is an arithmetic number, because the mean of its divisors is an integer number (62563219).

Almost surely, 2^125126437 is an apocalyptic number.

It is an amenable number.

125126437 is a deficient number, since it is larger than the sum of its proper divisors (1).

125126437 is an equidigital number, since it uses as much as digits as its factorization.

125126437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The square root of 125126437 is about 11185.9928928996. The cubic root of 125126437 is about 500.1685258584.

Adding to 125126437 its reverse (734621521), we get a palindrome (859747958).

The spelling of 125126437 in words is "one hundred twenty-five million, one hundred twenty-six thousand, four hundred thirty-seven".