126140129 has 2 divisors, whose sum is σ = 126140130. Its totient is φ = 126140128.

The previous prime is 126140093. The next prime is 126140191. The reversal of 126140129 is 921041621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80550625 + 45589504 = 8975^2 + 6752^2 .

It is a cyclic number.

It is not a de Polignac number, because 126140129 - 2¹² = 126136033 is a prime.

It is a super-2 number, since 2×126140129² = 31822664288273282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126140098 and 126140107.

It is not a weakly prime, because it can be changed into another prime (126140929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63070064 + 63070065.

It is an arithmetic number, because the mean of its divisors is an integer number (63070065).

Almost surely, 2^126140129 is an apocalyptic number.

It is an amenable number.

126140129 is a deficient number, since it is larger than the sum of its proper divisors (1).

126140129 is an equidigital number, since it uses as much as digits as its factorization.

126140129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 126140129 is about 11231.2122676050. The cubic root of 126140129 is about 501.5155734327.

The spelling of 126140129 in words is "one hundred twenty-six million, one hundred forty thousand, one hundred twenty-nine".