126542387 has 2 divisors, whose sum is σ = 126542388. Its totient is φ = 126542386.

The previous prime is 126542371. The next prime is 126542461. The reversal of 126542387 is 783245621.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126542387 - 2⁴ = 126542371 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126542387.

It is not a weakly prime, because it can be changed into another prime (126542327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63271193 + 63271194.

It is an arithmetic number, because the mean of its divisors is an integer number (63271194).

Almost surely, 2^126542387 is an apocalyptic number.

126542387 is a deficient number, since it is larger than the sum of its proper divisors (1).

126542387 is an equidigital number, since it uses as much as digits as its factorization.

126542387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 38.

The square root of 126542387 is about 11249.1060533715. The cubic root of 126542387 is about 502.0481149948.

The spelling of 126542387 in words is "one hundred twenty-six million, five hundred forty-two thousand, three hundred eighty-seven".