126287929 has 2 divisors, whose sum is σ = 126287930. Its totient is φ = 126287928.

The previous prime is 126287879. The next prime is 126287933. The reversal of 126287929 is 929782621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122146704 + 4141225 = 11052^2 + 2035^2 .

It is a cyclic number.

It is not a de Polignac number, because 126287929 - 2¹³ = 126279737 is a prime.

It is a super-2 number, since 2×126287929² = 31897282022218082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126287939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63143964 + 63143965.

It is an arithmetic number, because the mean of its divisors is an integer number (63143965).

Almost surely, 2^126287929 is an apocalyptic number.

It is an amenable number.

126287929 is a deficient number, since it is larger than the sum of its proper divisors (1).

126287929 is an equidigital number, since it uses as much as digits as its factorization.

126287929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 46.

The square root of 126287929 is about 11237.7902187218. The cubic root of 126287929 is about 501.7113743791.

The spelling of 126287929 in words is "one hundred twenty-six million, two hundred eighty-seven thousand, nine hundred twenty-nine".