125345243 has 4 divisors (see below), whose sum is σ = 126637560. Its totient is φ = 124052928.

The previous prime is 125345219. The next prime is 125345249. The reversal of 125345243 is 342543521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125345243 is a prime.

It is a super-2 number, since 2×125345243² = 31422859885458098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125345249) 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, 646013 + ... + 646206.

It is an arithmetic number, because the mean of its divisors is an integer number (31659390).

Almost surely, 2^125345243 is an apocalyptic number.

125345243 is a deficient number, since it is larger than the sum of its proper divisors (1292317).

125345243 is an equidigital number, since it uses as much as digits as its factorization.

125345243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292316.

The product of its digits is 14400, while the sum is 29.

The square root of 125345243 is about 11195.7689776094. The cubic root of 125345243 is about 500.4599008527.

Adding to 125345243 its reverse (342543521), we get a palindrome (467888764).

The spelling of 125345243 in words is "one hundred twenty-five million, three hundred forty-five thousand, two hundred forty-three".