126180287 has 2 divisors, whose sum is σ = 126180288. Its totient is φ = 126180286.

The previous prime is 126180283. The next prime is 126180317. The reversal of 126180287 is 782081621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126180287 - 2² = 126180283 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126180283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63090143 + 63090144.

It is an arithmetic number, because the mean of its divisors is an integer number (63090144).

Almost surely, 2^126180287 is an apocalyptic number.

126180287 is a deficient number, since it is larger than the sum of its proper divisors (1).

126180287 is an equidigital number, since it uses as much as digits as its factorization.

126180287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 126180287 is about 11232.9999109766. Note that the first 4 decimals coincide. The cubic root of 126180287 is about 501.5687886564.

The spelling of 126180287 in words is "one hundred twenty-six million, one hundred eighty thousand, two hundred eighty-seven".