126872113 has 2 divisors, whose sum is σ = 126872114. Its totient is φ = 126872112.

The previous prime is 126872087. The next prime is 126872143. The reversal of 126872113 is 311278621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105822369 + 21049744 = 10287^2 + 4588^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126872113 is a prime.

It is not a weakly prime, because it can be changed into another prime (126872143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63436056 + 63436057.

It is an arithmetic number, because the mean of its divisors is an integer number (63436057).

Almost surely, 2^126872113 is an apocalyptic number.

It is an amenable number.

126872113 is a deficient number, since it is larger than the sum of its proper divisors (1).

126872113 is an equidigital number, since it uses as much as digits as its factorization.

126872113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 31.

The square root of 126872113 is about 11263.7521723447. The cubic root of 126872113 is about 502.4837917926.

The spelling of 126872113 in words is "one hundred twenty-six million, eight hundred seventy-two thousand, one hundred thirteen".