126725213 has 2 divisors, whose sum is σ = 126725214. Its totient is φ = 126725212.

The previous prime is 126725201. The next prime is 126725233. The reversal of 126725213 is 312527621.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88322404 + 38402809 = 9398^2 + 6197^2 .

It is a cyclic number.

It is not a de Polignac number, because 126725213 - 2¹² = 126721117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126725233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63362606 + 63362607.

It is an arithmetic number, because the mean of its divisors is an integer number (63362607).

Almost surely, 2^126725213 is an apocalyptic number.

It is an amenable number.

126725213 is a deficient number, since it is larger than the sum of its proper divisors (1).

126725213 is an equidigital number, since it uses as much as digits as its factorization.

126725213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 29.

The square root of 126725213 is about 11257.2293660563. The cubic root of 126725213 is about 502.2897817913.

The spelling of 126725213 in words is "one hundred twenty-six million, seven hundred twenty-five thousand, two hundred thirteen".