126245123 has 2 divisors, whose sum is σ = 126245124. Its totient is φ = 126245122.

The previous prime is 126245117. The next prime is 126245201. The reversal of 126245123 is 321542621.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (321542621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126245123 - 2⁶ = 126245059 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 126245092 and 126245101.

It is not a weakly prime, because it can be changed into another prime (126241123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63122561 + 63122562.

It is an arithmetic number, because the mean of its divisors is an integer number (63122562).

Almost surely, 2^126245123 is an apocalyptic number.

126245123 is a deficient number, since it is larger than the sum of its proper divisors (1).

126245123 is an equidigital number, since it uses as much as digits as its factorization.

126245123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 26.

The square root of 126245123 is about 11235.8855013746. The cubic root of 126245123 is about 501.6546820142.

Adding to 126245123 its reverse (321542621), we get a palindrome (447787744).

The spelling of 126245123 in words is "one hundred twenty-six million, two hundred forty-five thousand, one hundred twenty-three".