126871837 has 2 divisors, whose sum is σ = 126871838. Its totient is φ = 126871836.

The previous prime is 126871819. The next prime is 126871879. The reversal of 126871837 is 738178621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124858276 + 2013561 = 11174^2 + 1419^2 .

It is an emirp because it is prime and its reverse (738178621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126871837 - 2¹¹ = 126869789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126871793 and 126871802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126841837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63435918 + 63435919.

It is an arithmetic number, because the mean of its divisors is an integer number (63435919).

Almost surely, 2^126871837 is an apocalyptic number.

It is an amenable number.

126871837 is a deficient number, since it is larger than the sum of its proper divisors (1).

126871837 is an equidigital number, since it uses as much as digits as its factorization.

126871837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 43.

The square root of 126871837 is about 11263.7399206480. The cubic root of 126871837 is about 502.4834274214.

The spelling of 126871837 in words is "one hundred twenty-six million, eight hundred seventy-one thousand, eight hundred thirty-seven".