126687829 has 2 divisors, whose sum is σ = 126687830. Its totient is φ = 126687828.

The previous prime is 126687823. The next prime is 126687857. The reversal of 126687829 is 928786621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113742225 + 12945604 = 10665^2 + 3598^2 .

It is a cyclic number.

It is not a de Polignac number, because 126687829 - 2¹¹ = 126685781 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126687823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63343914 + 63343915.

It is an arithmetic number, because the mean of its divisors is an integer number (63343915).

Almost surely, 2^126687829 is an apocalyptic number.

It is an amenable number.

126687829 is a deficient number, since it is larger than the sum of its proper divisors (1).

126687829 is an equidigital number, since it uses as much as digits as its factorization.

126687829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 49.

The square root of 126687829 is about 11255.5687994877. The cubic root of 126687829 is about 502.2403850229.

The spelling of 126687829 in words is "one hundred twenty-six million, six hundred eighty-seven thousand, eight hundred twenty-nine".