126571013 has 2 divisors, whose sum is σ = 126571014. Its totient is φ = 126571012.

The previous prime is 126571007. The next prime is 126571057. The reversal of 126571013 is 310175621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119399329 + 7171684 = 10927^2 + 2678^2 .

It is a cyclic number.

It is not a de Polignac number, because 126571013 - 2⁶ = 126570949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126571213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63285506 + 63285507.

It is an arithmetic number, because the mean of its divisors is an integer number (63285507).

Almost surely, 2^126571013 is an apocalyptic number.

It is an amenable number.

126571013 is a deficient number, since it is larger than the sum of its proper divisors (1).

126571013 is an equidigital number, since it uses as much as digits as its factorization.

126571013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 126571013 is about 11250.3783491934. The cubic root of 126571013 is about 502.0859693615.

The spelling of 126571013 in words is "one hundred twenty-six million, five hundred seventy-one thousand, thirteen".