126424013 has 2 divisors, whose sum is σ = 126424014. Its totient is φ = 126424012.

The previous prime is 126424003. The next prime is 126424037. The reversal of 126424013 is 310424621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90687529 + 35736484 = 9523^2 + 5978^2 .

It is a cyclic number.

It is not a de Polignac number, because 126424013 - 2¹⁴ = 126407629 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 126424013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126424003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63212006 + 63212007.

It is an arithmetic number, because the mean of its divisors is an integer number (63212007).

Almost surely, 2^126424013 is an apocalyptic number.

It is an amenable number.

126424013 is a deficient number, since it is larger than the sum of its proper divisors (1).

126424013 is an equidigital number, since it uses as much as digits as its factorization.

126424013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 126424013 is about 11243.8433375781. The cubic root of 126424013 is about 501.8915192862.

Adding to 126424013 its reverse (310424621), we get a palindrome (436848634).

The spelling of 126424013 in words is "one hundred twenty-six million, four hundred twenty-four thousand, thirteen".