126540829 has 2 divisors, whose sum is σ = 126540830. Its totient is φ = 126540828.

The previous prime is 126540797. The next prime is 126540847. The reversal of 126540829 is 928045621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68856804 + 57684025 = 8298^2 + 7595^2 .

It is a cyclic number.

It is not a de Polignac number, because 126540829 - 2⁵ = 126540797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126540859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63270414 + 63270415.

It is an arithmetic number, because the mean of its divisors is an integer number (63270415).

Almost surely, 2^126540829 is an apocalyptic number.

It is an amenable number.

126540829 is a deficient number, since it is larger than the sum of its proper divisors (1).

126540829 is an equidigital number, since it uses as much as digits as its factorization.

126540829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 126540829 is about 11249.0368032112. The cubic root of 126540829 is about 502.0460545674.

The spelling of 126540829 in words is "one hundred twenty-six million, five hundred forty thousand, eight hundred twenty-nine".