126740387 has 2 divisors, whose sum is σ = 126740388. Its totient is φ = 126740386.

The previous prime is 126740359. The next prime is 126740401. The reversal of 126740387 is 783047621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126740387 - 2²⁴ = 109963171 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126740387.

It is not a weakly prime, because it can be changed into another prime (126740587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63370193 + 63370194.

It is an arithmetic number, because the mean of its divisors is an integer number (63370194).

Almost surely, 2^126740387 is an apocalyptic number.

126740387 is a deficient number, since it is larger than the sum of its proper divisors (1).

126740387 is an equidigital number, since it uses as much as digits as its factorization.

126740387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 126740387 is about 11257.9033127843. The cubic root of 126740387 is about 502.3098289489.

The spelling of 126740387 in words is "one hundred twenty-six million, seven hundred forty thousand, three hundred eighty-seven".