126405533 has 2 divisors, whose sum is σ = 126405534. Its totient is φ = 126405532.

The previous prime is 126405527. The next prime is 126405547. The reversal of 126405533 is 335504621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126405049 + 484 = 11243^2 + 22^2 .

It is a cyclic number.

It is not a de Polignac number, because 126405533 - 2⁸ = 126405277 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 126405496 and 126405505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126405563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63202766 + 63202767.

It is an arithmetic number, because the mean of its divisors is an integer number (63202767).

Almost surely, 2^126405533 is an apocalyptic number.

It is an amenable number.

126405533 is a deficient number, since it is larger than the sum of its proper divisors (1).

126405533 is an equidigital number, since it uses as much as digits as its factorization.

126405533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 126405533 is about 11243.0215244835. The cubic root of 126405533 is about 501.8670634701.

The spelling of 126405533 in words is "one hundred twenty-six million, four hundred five thousand, five hundred thirty-three".