125761243 has 2 divisors, whose sum is σ = 125761244. Its totient is φ = 125761242.

The previous prime is 125761231. The next prime is 125761253. The reversal of 125761243 is 342167521.

It is a strong prime.

It is an emirp because it is prime and its reverse (342167521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125761243 is a prime.

It is not a weakly prime, because it can be changed into another prime (125761213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62880621 + 62880622.

It is an arithmetic number, because the mean of its divisors is an integer number (62880622).

Almost surely, 2^125761243 is an apocalyptic number.

125761243 is a deficient number, since it is larger than the sum of its proper divisors (1).

125761243 is an equidigital number, since it uses as much as digits as its factorization.

125761243 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 125761243 is about 11214.3320353911. The cubic root of 125761243 is about 501.0129371974.

It can be divided in two parts, 1257 and 61243, that added together give a square (62500 = 250²).

The spelling of 125761243 in words is "one hundred twenty-five million, seven hundred sixty-one thousand, two hundred forty-three".