126938213 has 2 divisors, whose sum is σ = 126938214. Its totient is φ = 126938212.

The previous prime is 126938209. The next prime is 126938243. The reversal of 126938213 is 312839621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117896164 + 9042049 = 10858^2 + 3007^2 .

It is a cyclic number.

It is not a de Polignac number, because 126938213 - 2² = 126938209 is a prime.

It is a super-2 number, since 2×126938213² = 32226619839266738, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126938243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63469106 + 63469107.

It is an arithmetic number, because the mean of its divisors is an integer number (63469107).

Almost surely, 2^126938213 is an apocalyptic number.

It is an amenable number.

126938213 is a deficient number, since it is larger than the sum of its proper divisors (1).

126938213 is an equidigital number, since it uses as much as digits as its factorization.

126938213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 35.

The square root of 126938213 is about 11266.6859812458. The cubic root of 126938213 is about 502.5710408377.

The spelling of 126938213 in words is "one hundred twenty-six million, nine hundred thirty-eight thousand, two hundred thirteen".